Maritime English
Maritime English Glossary
647 professional maritime english terms with definitions, pronunciation and examples. Learn what each term means — free with Termify.
A
- Qu'est-ce que Abandon de Relèvement ? Command to discontinue planned position fixing process when results are unreliable or time-critical manoeuvre takes prio...
- Qu'est-ce que Abandonner le navire ? A formal command given by the Master ordering crew and passengers to evacuate the vessel immediately due to grave danger...
- Qu'est-ce que Absorption d'Énergie des Défenses ? Capacity of berth fender system to absorb kinetic energy of vessel at specified berthing velocity without exceeding desi...
- Qu'est-ce que Accostage par Vent Fort ? A berthing operation performed in high wind conditions, requiring specific techniques, increased tug assistance, or thru...
- Qu'est-ce que Accumulation Statique ? The buildup of electrical charge on surfaces in a tank or pipeline during cargo transfer, creating a risk of discharge a...
- Qu'est-ce que Accusez réception de la position ? Instruction to confirm that a vessel’s reported navigational position has been received and understood.
- Qu'est-ce que Accusé de réception de détresse ? Formal confirmation of receipt of a distress message, typically using prescribed wording as per SMCP and ITU RR.
- Qu'est-ce que Accusé de réception de l’ordre de barre ? The required verbal response by the helmsman to confirm receipt and understanding of a helm order from the officer of th...
- Qu'est-ce que Accusé de réception du message ? Formal confirmation of receipt of a transmitted communication, usually by repeating essential content.
- Qu'est-ce que Affichage de carte vectorielle ? An electronic navigational chart presented in vector format, enabling interactive layers and detailed, scalable map feat...
- Qu'est-ce que Affichage superposé radar ? The presentation of radar information directly on the electronic chart display, enabling visual correlation of radar tar...
- Qu'est-ce que Aide d'Accostage Électronique ? Shore-based microwave or laser sensor system providing real-time range, closing speed, and alignment data to approaching...
- Qu'est-ce que Alarme Appareil à Gouverner ? A warning signal indicating malfunction or abnormal condition in the steering gear system, requiring immediate crew inve...
- Qu'est-ce que Alarme d'Angle de Dérive ? Navigation sensor alert triggered when vessel’s leeway or sideslip exceeds predefined safe threshold relative to track.
- Qu'est-ce que Alarme d'urgence ? The shipwide audible and visual signal indicating a serious emergency; activates muster or evacuation as per muster list...
- Qu'est-ce que Alarme de Mise en Virage ? An electronic or mechanical alarm that notifies the bridge team when it is time to initiate the wheel-over manoeuvre, us...
- Qu'est-ce que Alarme de Niveau Haut ? A critical warning system that alerts crew when the liquid in a tank approaches a designated high point, preventing over...
- Qu'est-ce que Alarme de Profondeur d’Eau ? An alert activated when the measured depth beneath a vessel approaches a pre-set minimum, used to avoid grounding.
- Qu'est-ce que Alarme de surveillance d’intégrité ? An alarm signaling a failure or inconsistency detected in the position integrity monitoring system, requiring immediate ...
- Qu'est-ce que Alarme de Synchronisation du Gouvernail ? An alert indicating a mismatch between helm (steering wheel) position and rudder angle, requiring immediate attention to...
- Qu'est-ce que Alarme de séquencement de point de route ? An alarm on navigation systems indicating failure to automatically advance to the next waypoint as programmed in the voy...
- Qu'est-ce que Alarme de Trop-plein ? An automatic safety device that activates an audible and visual alert when liquid in a tank approaches a critical high l...
- Qu'est-ce que Alarme d’inondation ? An audible and/or visual alarm triggered automatically or manually when water ingress is detected in compartments below ...
- Qu'est-ce que Alarme d’évacuation ? A specific alarm signal used to order immediate evacuation of the vessel or designated areas due to critical emergency.
- Qu'est-ce que Alarme Eau de Cale ? An alert indicating the presence of excess water in the bilge spaces, often requiring automatic or manual pumping, and i...
- Qu'est-ce que Alarme incendie ? An audible and/or visual signal, automatically or manually triggered, alerting crew to the presence of fire and the need...
- Qu'est-ce que Alarme incendie ? An audible and/or visual signal system activated manually or automatically to warn crew of fire and trigger the ship’s e...
- Qu'est-ce que Alarme Salle des Machines ? An audible and/or visual signal in the engine room, indicating an abnormal or hazardous condition in machinery, systems,...
- Qu'est-ce que Alarme Vitesse Arrière ? An alarm triggered when a vessel's sternway (reverse movement) exceeds a preset speed threshold, alerting crew to possib...
- Qu'est-ce que Alerte Activité Foudre ? Alert issued when frequent cloud-to-ground or cloud-to-cloud lightning poses immediate risk to deck personnel and sensit...
- Qu'est-ce que Alerte Brouillard Givrant ? An advisory issued to warn vessels of freezing fog conditions, which may cause ice accumulation on decks, equipment, and...
- Qu'est-ce que Alerte Coup de Vent ? A warning issued to mariners when sustained winds of Beaufort Force 8 or higher (34–40 knots) are expected or occurring ...
- Qu'est-ce que Alerte Cyclone ? Official alert issued when a tropical cyclone with gale-force winds is expected to affect a maritime area within 24 hour...
- Qu'est-ce que Alerte de Condition Voile Blanc ? A warning indicating that visual navigation is severely hindered due to uniformly diffuse light caused by snow, ice, or ...
- Qu'est-ce que Alerte de Crête de Pression ? A notice regarding the formation or presence of elevated ice ridges on sea ice, which may pose navigational hazards to v...
- Qu'est-ce que Alerte de détresse ? An internationally recognized signal, transmitted by GMDSS or VHF, indicating grave and imminent danger requiring immedi...
- Qu'est-ce que Alerte Déversement d’Hydrocarbures ? Immediate notification that mineral oil is observed on sea surface requiring containment and reporting under MARPOL 73/7...
- Qu'est-ce que Alerte Front Occlus ? Notification that a mature occluded front will pass the vessel’s vicinity, often associated with variable winds and squa...
- Qu'est-ce que Alerte Ligne de Grain ? Notification that organised line of squalls with gusts ≥ 34 kn is approaching, often ahead of cold front.
- Qu'est-ce que Alerte Pluies Torrentielles ? An official advisory issued to warn of intense and prolonged rainfall that may severely reduce visibility and increase r...
- Qu'est-ce que Alerte Tempête Tropicale ? An official advisory issued to warn vessels that a tropical storm may affect the area within 48 hours. Mariners should c...
- Qu'est-ce que Alerte Typhon ? Highest-level tropical-cyclone warning issued by JMA or PAGASA for winds ≥64 kt, heavy seas and extreme storm surge thre...
- Qu'est-ce que Alerte Vague de Froid ? An official warning issued to inform mariners of an expected period of unusually low temperatures, which may affect vess...
- Qu'est-ce que Alignement de la Ligne Centrale du Chenal ? The practice of steering a vessel so that its longitudinal axis remains aligned with the designated navigational centrel...
- Qu'est-ce que Alignement Feux de Relèvement ? The navigation technique of steering a vessel so that two range lights, one behind the other, appear vertically aligned,...
- Qu'est-ce que Alignement Feux d’Alignement ? The process of navigating a vessel by visually aligning two or more fixed leading lights (range lights), ensuring the ve...
- Qu'est-ce que Alimentation de secours ? Alternative power source such as a generator or battery supplying essential systems during main power failure.
- Qu'est-ce que Alimentation en Huile de Cylindre ? The controlled supply of lubricating oil to the main engine cylinder liners, essential for reducing friction and wear, a...
- Qu'est-ce que Ancre chasse ? Situation where a vessel’s anchor fails to hold and the vessel moves from its intended position, risking collision or gr...
- Qu'est-ce que Ancre dérapante ? Situation where a vessel’s anchor does not hold, causing the ship to drift from its intended position.
- Qu'est-ce que Angle de Dérive Contrôlé ? Intentional small leeway angle set between vessel heading and track to counter cross-wind or current during approach.
- Qu'est-ce que Angle Négatif de l’Hélice à Pas Variable ? A controllable pitch propeller blade setting that provides astern thrust for stopping or reversing the vessel.
- Qu'est-ce que Angle Positif de l’Hélice à Pas Variable ? A controllable pitch propeller blade setting that provides forward thrust, the amount adjusted for desired vessel speed ...
- Qu'est-ce que Angle Zéro de l’Hélice à Pas Variable ? The position of a controllable pitch propeller (CPP) where the blades are aligned to produce no thrust, used for stoppin...
- Qu'est-ce que Annulation de détresse ? Official transmission that a previous distress message is no longer valid, usually after the situation has been resolved...
- Qu'est-ce que Annulation du message ? Official notification that a previously transmitted message or warning is no longer valid or has been withdrawn.
- Qu'est-ce que Annuler l’avertissement ? Official notification that a previously issued warning is no longer in effect.
- Qu'est-ce que Annulez l'avertissement ? Formal message to withdraw or annul a previously issued navigational, meteorological, or safety warning that is no longe...
- Qu'est-ce que Appareil respiratoire à circuit fermé ? A self-contained device that provides breathable air in hazardous or smoke-filled environments, preventing the inhalatio...
- Qu'est-ce que Appareil à gouverner de secours ? Alternate manual or powered system used to control ship's rudder if the main steering fails.
- Qu'est-ce que Application du Propulseur d’Étrave ? Use of bow thruster to generate lateral force at bow for precise positioning or counteracting environmental forces durin...
- Qu'est-ce que Approche de Front Chaud ? Indication that a warm air mass front is advancing toward the vessel’s area, typically bringing steady rain and veering ...
- Qu'est-ce que Approche de Front Froid ? A message or forecast that a cold front is moving into the operational area, often accompanied by abrupt wind shift, fal...
- Qu'est-ce que Arrêt d'urgence ? Immediate cessation of cargo or bunker transfer operations, activated by crew or terminal, to prevent accidents or mitig...
- Qu'est-ce que Arrêt d'Urgence ? Immediate cessation of shipboard machinery, system, or cargo operation due to a critical safety or environmental risk.
- Qu'est-ce que Arrêt de chaudière auxiliaire ? The complete stopping of an auxiliary boiler on board, including secure isolation and safety checks, typically during po...
- Qu'est-ce que Arrêt d’urgence ? An immediate shutdown of machinery or vessel propulsion, triggered by an emergency to prevent further damage or danger.
- Qu'est-ce que Arrêt d’urgence du carburant ? A safety device or procedure for rapidly stopping fuel supply to machinery or tanks in case of fire or other emergencies...
- Qu'est-ce que Arrêt Progressif des Propulseurs ? The process of safely reducing thruster power and shutting down the units after manoeuvring or while leaving station kee...
- Qu'est-ce que Arrêt Sécurité Moteur ? An automatic or manual action that stops the engine to prevent damage or hazard when critical parameters exceed safe lim...
- Qu'est-ce que Arrêtez les machines principales ? Engine telegraph order to cease all propulsion; used when vessel is to remain stationary or fully secured at berth.
- Qu'est-ce que Aspiration de Cale d'Urgence ? A designated suction line and valve in the engine room bilge system used only in emergencies to rapidly remove water fro...
- Qu'est-ce que Atmosphère de la citerne ? The composition and quality of gases present inside a cargo tank, monitored to ensure safety from flammable, toxic, or i...
- Qu'est-ce que Augmentez votre vitesse ? Instruction to make more way through the water to meet traffic, tidal, or berth scheduling requirements.
- Qu'est-ce que Avancer en arrière ? Order or report indicating the vessel is moving, or must move, backward relative to its heading.
- Qu'est-ce que Avertissement de Courant de Surface ? Official MSI or VHF message advising mariners that abnormally strong or variable surface currents exist in a defined are...
- Qu'est-ce que Avertissement de Forte Neige ? Forecast advising imminent heavy snowfall reducing visibility below 0.5 nm and affecting mooring or channel transit.
- Qu'est-ce que Avertissement de Glace Fragmentée ? Message issued by ice services or VTS indicating dangerous concentrations of brash ice likely to impede manoeuvring or c...
- Qu'est-ce que Avertissement de navigation ? Official broadcast of hazards, obstructions, or operational restrictions that may affect safe navigation.
- Qu'est-ce que Avertissement de Passage Frontal ? A formal advisory issued by maritime authorities warning vessels of an approaching frontal system likely to bring sudden...
- Qu'est-ce que Avertissement de Pluie Forte ? GMDSS meteorological message signalling precipitation rate ≥ 50 mm in 6 h, causing reduced visibility and risk of runoff...
- Qu'est-ce que Avertissement de Pluie Verglaçante ? GMDSS forecast message indicating super-cooled rain likely to freeze on contact, causing rapid ice accretion on decks an...
- Qu'est-ce que Avertissement de Tempête ? A formal notification from maritime or meteorological authorities indicating strong winds, heavy seas, and potentially h...
- Qu'est-ce que Avertissement de Vague de Marée ? An official alert issued to vessels regarding an abnormally high rise of sea level due to meteorological effects, especi...
- Qu'est-ce que Avertissement de Visibilité Réduite ? A formal alert issued to vessels when fog, mist, precipitation, or other factors are expected to lower visibility below ...
- Qu'est-ce que Avertissement de Zone d'Interaction ? Advisory issued when proximity of shallow banks or passing vessels may cause hydrodynamic interaction affecting steering...
- Qu'est-ce que Avertissement d’Ouragan ? A formal announcement by maritime or meteorological authorities indicating that hurricane conditions, including very hig...
- Qu'est-ce que Avertissement Growler ? Alert indicating presence of small, dense glacial ice blocks (growlers) scarcely visible above water, posing collision r...
- Qu'est-ce que Avertissement à la navigation ? A formal broadcast or message informing mariners of navigational hazards, new obstructions, or significant changes in ch...
- Qu'est-ce que Avis d'Impact Environnemental ? Formal notification detailing projected ecological effects of vessel operations or construction works, issued for regula...
- Qu'est-ce que Avis de Bancs de Brouillard ? Notice to mariners of localised fog banks that may suddenly reduce visibility and require speed reduction or additional ...
- Qu'est-ce que Avis de Brouillard Dense ? Warning issued when visibility expected below one-half nautical mile due to thick fog, requiring sound signals and speed...
- Qu'est-ce que Avis de Brouillard Marin ? Notice that horizontal visibility at sea will fall below one kilometre due to advection or radiation fog.
- Qu'est-ce que Avis de Courant Côtier ? Official notice to mariners about significant changes, hazards, or anomalies in coastal water currents affecting safe na...
- Qu'est-ce que Avis de Formation de Brume ? An official advisory indicating that atmospheric conditions are favorable for mist development, which may lower visibili...
- Qu'est-ce que Avis de Givrage par Embâcle ? GMDSS meteorological warning that sea spray will freeze on exposed surfaces causing topside icing hazards.
- Qu'est-ce que Avis de hauteur de vague ? A warning issued to vessels regarding anticipated significant wave heights exceeding safe operating limits.
- Qu'est-ce que Avis de Onde de Tempête ? Warning that abnormal sea-level rise due to cyclonic surge is expected in coastal area, requiring preventive mooring and...
- Qu'est-ce que Avis d’Accumulation de Glace ? Notice that superstructure icing rate exceeds 2 cm h⁻¹ due to freezing precipitation or spray, requiring anti-icing meas...
- Qu'est-ce que Aération fermée ? Method of venting tank vapours through a controlled, closed system to prevent release of gases to the atmosphere, comply...
B
- Qu'est-ce que Bac de Rétention ? A shallow container placed beneath piping joints or hoses to catch leaks or drips during cargo transfer operations and p...
- Qu'est-ce que Balise de position d’urgence ? A radio beacon, such as an EPIRB, used to transmit the position of a vessel or survivor in distress to search and rescue...
- Qu'est-ce que Ballast Séparé ? Ballast water held in tanks completely separated from cargo oil and fuel systems, used to ensure no contamination occurs...
- Qu'est-ce que Barrage flottant ? A floating barrier deployed to contain and control oil or chemical spills on the surface of the water.
- Qu'est-ce que Barre au milieu ? Helm order to bring the rudder to the midships (zero angle) position, aligning with the vessel’s centerline.
- Qu'est-ce que Bassin de Virage du Chenal ? A designated widened section of a navigational fairway, specifically constructed to allow vessels to safely turn or chan...
- Qu'est-ce que Blocage de vapeur ? A condition where vapor forms in a pipeline or pump, blocking the flow of liquid cargo and potentially disrupting operat...
- Qu'est-ce que Blocage du Télégraphe Machine ? A failure or obstruction in the engine telegraph system, preventing bridge orders from being transmitted to the engine r...
- Qu'est-ce que Blocage Propulseur Azimutal ? A system state where azimuth thrusters are held in a fixed orientation to prevent movement, usually for safety during ma...
- Qu'est-ce que Boucle de Rétroaction de Barre ? A control system that continually monitors rudder position and vessel heading to automatically correct steering and main...
- Qu'est-ce que Bouée non éclairée ? A navigation buoy whose light is inoperative or not functioning, presenting a hazard at night.
- Qu'est-ce que Bras de Chargement ? A movable articulated mechanical arm used at terminals to transfer liquid cargo between ship and shore through the cargo...
- Qu'est-ce que Brouillage détecté ? Notification that radio communication is being interfered with by intentional or unintentional signal jamming.
- Qu'est-ce que Brouillage fréquent ? Repeated radio noise or overlapping transmissions that degrade VHF communication quality on the working channel.
- Qu'est-ce que Budget Énergétique d’Accostage ? The total kinetic energy allowed for a vessel to safely berth, accounting for mass, speed, and fender capacity to preven...
- Qu'est-ce que Bulletin de Risque de Trombe Marine ? An official maritime bulletin advising of the risk of waterspout formation in a specific sea area, requiring heightened ...
- Qu'est-ce que Bulletin de Tempête Sévère ? Official GMDSS warning message indicating winds ≥ Beaufort 10, heavy seas and reduced visibility within forecast area.
- Qu'est-ce que Bulletin Météo GMDSS ? Scheduled meteorological broadcast issued via NAVTEX, HF, MF or satellite under the Global Maritime Distress and Safety ...
- Qu'est-ce que Bulletin météorologique ? Official broadcast of weather conditions, warnings, and forecasts relevant to maritime navigation.
C
- Qu'est-ce que Calcul de la Distance d'Avance ? Determination of the longitudinal distance the vessel travels on the original heading during a turn from rudder order un...
- Qu'est-ce que Calcul de la fenêtre de marée ? The process of determining the optimal period based on tidal height during which a vessel can safely transit shallow wat...
- Qu'est-ce que Calcul de Stabilité ? The process of determining a vessel’s ability to remain upright and safe under current loading conditions by calculating...
- Qu'est-ce que Canal de garde ? A designated VHF radio frequency used for emergency, distress, or mandatory communication monitoring.
- Qu'est-ce que Canal occupé ? Notification that the selected VHF working channel is congested with traffic, making immediate communication difficult.
- Qu'est-ce que Canal seize ? The international VHF radio distress, safety, and calling channel (156.8 MHz) monitored at all times by ships and shore ...
- Qu'est-ce que Canal seize ? The international VHF radio distress, safety, and calling frequency (156.8 MHz) mandatory for all seagoing vessels to mo...
- Qu'est-ce que Cap inchangé ? A statement or confirmation that a vessel’s present heading will not be altered.
- Qu'est-ce que Cap inchangé ? Statement indicating that the vessel’s heading remains as previously instructed or reported.
- Qu'est-ce que Capacité de Maintien du Frein de Treuil ? Certified static load that a mooring-winch brake can safely withstand without paying out when lines are under tension.
- Qu'est-ce que Capacité de Traction du Cabestan ? Maximum continuous line-pull that a deck capstan can exert when hauling mooring lines at rated speed.
- Qu'est-ce que Capteur de Température d’Échappement ? A device that measures and transmits the temperature of exhaust gases, crucial for monitoring engine performance and pre...
- Qu'est-ce que Carburant Haute Pression ? Fuel oil pressurized to high levels for injection into main engine cylinders, delivered by high-pressure pumps as specif...
- Qu'est-ce que Cargaison dangereuse ? Any substance or material that poses a significant risk to health, safety, or property during transport by sea, as defin...
- Qu'est-ce que Carnet de manœuvre de passerelle ? A logbook kept on the bridge for recording all manoeuvring orders, engine telegraph movements, helm commands, and critic...
- Qu'est-ce que Carte de Pression au Sol ? Synoptic weather map depicting isobars and pressure systems at mean sea level, used for routeing decisions.
- Qu'est-ce que Changement de Point d’Attache du Remorqueur ? The coordinated operation in which a tug alters its line connection point or position to adapt to new towage requirement...
- Qu'est-ce que Changement de Trim Hydrostatique ? Change in a vessel’s longitudinal trim resulting from variations in hydrostatic forces due to ballast, cargo, or water d...
- Qu'est-ce que Changement d’appareil à gouverner ? The act of switching from one steering gear system or power unit to another, often for redundancy or in case of equipmen...
- Qu'est-ce que Changez de canal ? Instruction to switch VHF radio communications from one designated channel to another for operational or traffic managem...
- Qu'est-ce que Chargement Fermé ? A cargo transfer method where tanks are loaded via closed systems to prevent vapour emissions, following ISGOTT and MARP...
- Qu'est-ce que Chargement sur le dessus ? A cargo operation method in which the slops or residues in a tank are allowed to settle and then new cargo is loaded abo...
- Qu'est-ce que Chaudière de Gaz d'Échappement ? A heat recovery unit using main engine exhaust gases to generate steam for shipboard heating or auxiliary systems, integ...
- Qu'est-ce que Chauffage de Cargaison ? The controlled application of heat to cargo in tanks to maintain pumpability and product quality, especially with heavy ...
- Qu'est-ce que Chauffe-huile Thermique ? A unit designed to heat thermal oil used as a medium for transferring heat to fuel tanks, cargo systems, or other shipbo...
- Qu'est-ce que Chenal occupé ? Notification that a fairway or navigation channel is temporarily blocked or being used by another vessel, requiring othe...
- Qu'est-ce que Chute par-dessus bord ? The accidental or intentional act of a person leaving the vessel and entering the sea, triggering immediate man-overboar...
- Qu'est-ce que Clapet de pied ? A non-return valve installed at the lower end of a suction line in cargo or ballast tanks, designed to prevent backflow ...
- Qu'est-ce que Cloche avant lente ? The engine telegraph order for slow speed ahead, typically used during precise manoeuvring, docking, or when entering co...
- Qu'est-ce que Cloche demi avant ? Engine telegraph order instructing propulsion at half engine speed ahead, used for moderate manoeuvring or departure fro...
- Qu'est-ce que Cloche toute avant ? Engine telegraph order instructing propulsion at full engine speed ahead, typically used in open sea or to quickly gain ...
- Qu'est-ce que Coefficient de Moment d’Étrave ? A calculated factor describing the turning moment generated by the bow, crucial for assessing vessel manoeuvrability dur...
- Qu'est-ce que Coefficient d’Efficacité du Propulseur ? A calculated ratio indicating how effectively a vessel’s thruster converts power input into thrust for manoeuvring opera...
- Qu'est-ce que Coffre de lutte contre les avaries ? A secured storage area on board for tools, plugs, and equipment needed for rapid response to hull damage, flooding, or e...
- Qu'est-ce que Coffre d’urgence passerelle ? A secured storage location on the bridge containing emergency gear such as fire axes, breathing apparatus, and communica...
- Qu'est-ce que Coffre incendie ? A designated compartment or cabinet onboard containing firefighting equipment such as hoses, nozzles, and personal prote...
- Qu'est-ce que Collecteur de Cargaison ? A pipe assembly on a ship’s deck used for connecting shore hoses and controlling the transfer of liquid cargo to or from...
- Qu'est-ce que Combinaison de protection chimique ? A specialized suit worn by crew for personal protection against hazardous chemicals, especially during spill or leak eme...
- Qu'est-ce que Combinaison ignifuge ? A specialized suit, heat-resistant and insulated, worn by crew to provide protection against fire and high temperatures ...
- Qu'est-ce que Commande de marche arrière de l’ancre ? The controlled paying out of anchor chain in reverse (walkback) under power, used for precise anchor positioning or retr...
- Qu'est-ce que Commande Machine Principale ? The central console or system used to monitor and operate the ship’s main propulsion engine, including remote start, sto...
- Qu'est-ce que Communication de détresse ? Transmission of information regarding a distress situation, including distress calls, messages, and subsequent coordinat...
- Qu'est-ce que Communication de Détresse ? Radio transmission used to indicate that a vessel or person is in grave and imminent danger requiring immediate assistan...
- Qu'est-ce que Compartiment inondé ? A watertight section of a vessel that has unintentionally filled with seawater due to hull breach or system failure.
- Qu'est-ce que Compatibilité de cargaison ? Assessment of whether different cargoes can be safely loaded, carried, or stored together without risk of dangerous chem...
- Qu'est-ce que Compensation de la Densité de l’Eau ? The adjustment made to vessel loading or draught calculations to account for local water density, affecting buoyancy and...
- Qu'est-ce que Compensation du Délai de Commande ? Systematic adjustment made to navigation or machinery commands to account for time lag between order and vessel response...
- Qu'est-ce que Compensation du Moment de Lacet ? Adjustment of rudder angle, thruster output, or tug forces to counteract undesired yawing moments during low-speed manoe...
- Qu'est-ce que Compresseur d’air de démarrage ? A compressor that supplies high-pressure air for starting main and auxiliary engines, essential for engine readiness and...
- Qu'est-ce que Compteur de révolutions d’arbre ? A device or system that records the number of revolutions of the propulsion shaft, providing critical speed and distance...
- Qu'est-ce que Concentration de Glace de Mer ? A measure (usually in tenths) of the area of a sea region covered by ice, provided in ice bulletins to support safe navi...
- Qu'est-ce que Conduite principale incendie ? The principal pipeline on board supplying seawater under pressure to hydrants and hoses for firefighting, as specified b...
- Qu'est-ce que Confirmation de l’ancre levée ? The formal notification to the bridge or engine room that the anchor is clear of the seabed and ship is free to maneuver...
- Qu'est-ce que Confirmez la position ? Request or instruction to verify and report the current location of a vessel, typically in latitude and longitude.
- Qu'est-ce que Confirmez le cap ? A request or instruction to verify and state the vessel’s current or intended navigational course, usually in degrees tr...
- Qu'est-ce que Confirmez le relèvement ? Instruction to verify and report the direction of an object or navigational aid from the vessel, usually in degrees rela...
- Qu'est-ce que Conformité à la Ligne de Charge ? The act of ensuring that a vessel's draft and freeboard remain within limits set by the assigned Plimsoll mark and inter...
- Qu'est-ce que Connecteur pilote actif ? An active data connection port on the bridge that provides real-time navigational data from the ship's ECDIS or AIS syst...
- Qu'est-ce que Connexion Remorqueur d’Escorte ? The established secured line or method by which an escort tug is physically connected to a vessel, typically for control...
- Qu'est-ce que Contact du Panneau Pare-Chocs ? The point or process where the vessel's hull makes contact with the berth fender panel, usually monitored to avoid struc...
- Qu'est-ce que Contenu de Chaleur Océanique ? Measure of thermal energy stored in the upper ocean layers, used to assess cyclone potential and climate trends.
- Qu'est-ce que Continuez l'écoute ? Instruction to keep monitoring a specified VHF radio channel or other communication line for further traffic or safety m...
- Qu'est-ce que Contrôle de la Trajectoire d’Approche ? Continuous monitoring and adjustment of a vessel’s approach trajectory to the berth, ensuring a smooth, controlled entry...
- Qu'est-ce que Contrôle de la viscosité ? The process of monitoring and adjusting the viscosity of liquid cargo, often by heating or blending, to ensure efficient...
- Qu'est-ce que Contrôle de la vitesse de manœuvre ? The process of verifying and confirming the vessel’s speed through the water is suitable for safe manoeuvring during ber...
- Qu'est-ce que Contrôle des avaries ? The procedures and measures to limit, manage, or repair damage on board, especially after collision, flooding, fire, or ...
- Qu'est-ce que Contrôle des inondations ? Procedures and systems used to limit, contain, and remove water ingress after hull damage or compartment flooding.
- Qu'est-ce que Contrôle des inondations ? Actions and onboard systems used to limit, isolate, or remove flooding in compartments, such as watertight doors, pumps,...
- Qu'est-ce que Contrôle des Vapeurs ? System and procedures used to contain, monitor, and safely manage vapours generated during loading or discharging of car...
- Qu'est-ce que Contrôle du Dérapage Latéral ? Active steering or thruster management to prevent a vessel from swinging away (sheering off) from its intended track or ...
- Qu'est-ce que Contrôle du Garde-Hélice ? Inspection of the propeller guard for integrity and correct positioning before manoeuvring or departure, ensuring safe p...
- Qu'est-ce que Contrôle du Moment de Tangage ? The regulation of longitudinal pitching moments of a vessel, using ballast or thrusters, to ensure stability and reduce ...
- Qu'est-ce que Contrôle du Mouvement de Tangage Longitudinal ? Management of longitudinal oscillations of vessel while moored, using winch tension adjustments or tug assistance to pre...
- Qu'est-ce que Contrôle du Taux de Changement de Cap ? Autopilot or manual feedback setting that governs how rapidly the vessel’s heading may change, expressed in degrees per ...
- Qu'est-ce que Contrôlez la giration ? Helm or mooring order to observe and, if necessary, limit or arrest the vessel's swinging motion, especially when turnin...
- Qu'est-ce que Coordonnées confirmées ? Affirmation that the provided position or waypoint coordinates are checked and verified as correct, usually before repor...
- Qu'est-ce que Correction de l'Angle d'Anticipation ? Adjustment applied to ship’s heading to offset predicted set and drift so that actual track leads planned approach line.
- Qu'est-ce que Correction de la poussée transversale ? The adjustment applied to helm or engine orders to compensate for the sideways force exerted by a propeller, especially ...
- Qu'est-ce que Correction du Biais de Virage ? The adjustment made to compensate for a vessel’s natural tendency to turn more easily in one direction due to hull desig...
- Qu'est-ce que Correspondance publique ? Telecommunications service on board for the exchange of messages between ship and shore for public or commercial use.
- Qu'est-ce que Couloir de Trafic Recommandé ? A charted route within a traffic separation scheme or recommended track designed for the safe passage of vessels, but no...
- Qu'est-ce que Coup de Poussée Inverse ? A short, controlled burst of astern propulsion to quickly reduce a vessel’s forward speed or stop movement during precis...
- Qu'est-ce que Coupure de Cylindre ? A control action or device used to disable fuel supply to a cylinder, usually for maintenance or troubleshooting, while ...
- Qu'est-ce que Courant (direction et dérive) ? The direction (set) and speed (drift) of water current affecting the ship’s course and position.
- Qu'est-ce que Courant Transversal de Chenal ? Lateral water flow across a dredged channel causing set and drift that must be compensated during navigation.
- Qu'est-ce que Couverture anti-feu ? A sheet made of fire-resistant material used to smother small fires by cutting off the oxygen supply, often located in g...
- Qu'est-ce que Couverture anti-feu ? A fire-resistant sheet used to smother small fires or protect personnel during escape, required in galley and accommodat...
- Qu'est-ce que Croisement de collecteur ? A pipe or valve arrangement that allows transfer between different cargo manifolds, enabling flexibility in cargo handli...
- Qu'est-ce que Croisement de collecteur ? A pipe or valve arrangement that allows transfer between different cargo manifolds for flexible or emergency cargo handl...
- Qu'est-ce que Crépine de pompe ? A filtering device fitted to the suction side of cargo or ballast pumps to prevent entry of solid particles and debris t...
- Qu'est-ce que Crête de haute pression ? An elongated area of high atmospheric pressure, typically associated with calm weather and stable sea conditions.
- Qu'est-ce que Curage de canalisation ? Mechanical cleaning of pipelines using a device known as a 'pig' to remove residues or blockages and ensure efficient fl...
- Qu'est-ce que Curage de réservoir ? Process of removing residues or remaining liquids from cargo tanks after discharge, often using air, inert gas, or pumps...
- Qu'est-ce que Cédez le passage ? An instruction for a vessel to yield in order to avoid collision and allow another vessel to pass as per the COLREGS.
D
- Qu'est-ce que Demande d'Assistance de Remorqueurs ? Formal VHF or written message from vessel or pilot to harbour authority asking for specified tug support for manoeuvring...
- Qu'est-ce que Demande de Prévision Metarea ? Vessel’s formal demand via GMDSS for the latest meteorological forecast for a specific NAVAREA/METAREA region.
- Qu'est-ce que Descente d'urgence ? A rapid controlled descent initiated due to onboard emergencies such as fire or loss of cabin pressure, as per SOLAS and...
- Qu'est-ce que Diamètre du cercle de giration ? The distance perpendicular to the original track between tangents of the vessel’s path when executing a steady-turn at a...
- Qu'est-ce que Diffusion d'avertissement ? A formal message disseminated by VTS, harbour authority, or vessels to alert all ships in an area about navigational haz...
- Qu'est-ce que Diffusion d'information ? A general transmission on VHF or NAVTEX to inform vessels about safety, weather, traffic or other operational matters.
- Qu'est-ce que Diffusion de sécurité ? Official VHF or NAVTEX message to all ships concerning safety-related information or urgent warnings.
- Qu'est-ce que Différentiel d’Intercooler ? The pressure or temperature difference measured across the intercooler, used to detect fouling or blockages affecting en...
- Qu'est-ce que Dispositif de Séparation du Trafic ? An internationally recognized routing measure that separates opposing streams of vessel traffic by defined lanes and rul...
- Qu'est-ce que Disposition de l'affichage de conduite ? The arrangement of navigation and maneuvering information shown on the conning display for optimal bridge decision-makin...
- Qu'est-ce que Distance d'Arrêt d'Urgence ? Measured distance travelled from full ahead to complete stop using maximum astern power and rudder amidships.
- Qu'est-ce que Distance dégagée en arrière ? The available unobstructed distance behind the vessel, critical for manoeuvring astern.
- Qu'est-ce que Dosage automatique de chaudière ? A system that automatically injects water treatment chemicals into the boiler feedwater to control scale and corrosion, ...
- Qu'est-ce que Douche oculaire d'urgence ? A safety device providing immediate water flow for flushing eyes exposed to chemicals, smoke, or contaminants on board.
- Qu'est-ce que Débarquement du pilote de port ? The controlled process by which the harbour pilot safely leaves the vessel after completing the inbound or outbound pass...
- Qu'est-ce que Décalage d’Écho Radar ? The adjustment of the radar image to compensate for systematic error or offset, ensuring true target positions correspon...
- Qu'est-ce que Défaillance de la référence de cap ? A malfunction or loss of accuracy in the ship’s heading reference system, such as gyro or magnetic compass, affecting na...
- Qu'est-ce que Dégagement Aileron Passerelle ? Minimum air gap required between ship’s bridge wing extremities and shore structures or lock walls during manoeuvring.
- Qu'est-ce que Dégazage ? The process of removing hazardous or toxic vapours from tanks by ventilation, rendering them safe for entry, inspection,...
- Qu'est-ce que Dégazage des Citernes ? The controlled release of vapours from a cargo tank through dedicated venting systems to prevent overpressure or vacuum ...
- Qu'est-ce que Démarrage Dépendant de la Charge ? An automatic function of the ship’s power management system that starts or stops auxiliary engines or generators based o...
- Qu'est-ce que Démarrage Groupe Auxiliaire ? The operation to start a ship’s auxiliary engine, which provides electrical power or essential services independently of...
- Qu'est-ce que Démarrage Générateur de Secours ? The procedure to initiate the ship's emergency generator to supply critical electrical power during a main blackout or f...
- Qu'est-ce que Déplacement de Ligne ? The process of clearing a pipeline by pushing cargo or liquid out with another medium, usually to ensure product segrega...
- Qu'est-ce que Dérivation du Filtre à Carburant ? A mechanism allowing fuel to flow around a clogged filter element to maintain engine operation in emergencies, potential...
- Qu'est-ce que Déshydratation de la cargaison ? The process of removing water from cargo, especially crude oil, by settling, heating, or chemical means, to meet quality...
- Qu'est-ce que Déshydratation de la cargaison ? The process of removing water from cargo, especially crude oil, by settling, heating, or chemical means to meet quality ...
- Qu'est-ce que Détecteur de brouillard d’huile ? A fixed device that continuously monitors and detects oil mist concentrations in engine crankcases to prevent explosions...
E
- Qu'est-ce que Eau de Refroidissement de Chemise ? The fresh water circulating through the engine’s cylinder jacket to absorb heat and prevent overheating during operation...
- Qu'est-ce que Effet de coussin de berge ? Hydrodynamic phenomenon where water pressure between a vessel and a nearby bank creates a cushion, pushing the bow away ...
- Qu'est-ce que Effet de la surface exposée au vent ? The influence of the ship’s exposed surface area above the waterline, causing increased drift or leeway under wind press...
- Qu'est-ce que Effet d’aspiration de berge ? Hydrodynamic phenomenon where a vessel navigating close to a bank experiences a suction force pulling the vessel toward ...
- Qu'est-ce que Effet Transversal de l’Hélice ? Side-force generated by propeller rotation causing yaw, especially stern kick to port or starboard when powering ahead o...
- Qu'est-ce que Embarcation de survie de l’équipage ? A life-saving craft, such as a lifeboat or liferaft, carried on board and designated for the emergency evacuation and su...
- Qu'est-ce que Embarquement du pilote ? Designated process and location where a maritime pilot embarks or disembarks from a vessel.
- Qu'est-ce que Embarquement du pilote de port ? The procedure for safely boarding the harbour pilot at sea or at the entrance of the port using a pilot ladder or launch...
- Qu'est-ce que Empruntez le chenal ? Instruction to enter and follow a designated fairway or channel for safe navigation as directed by VTS or port authority...
- Qu'est-ce que En approche du port ? Statement or report that a vessel is moving towards a port or entering a specific area.
- Qu'est-ce que En arrière très lente ? Engine telegraph order instructing propulsion at the lowest possible speed astern, used for delicate reversing or while ...
- Qu'est-ce que En avant très lente ? Engine telegraph order instructing propulsion at the lowest possible speed ahead, used for delicate manoeuvring or conge...
- Qu'est-ce que En veille, machines principales ? Order for main engines to be ready for immediate use, typically before departure, arrival, or manoeuvring.
- Qu'est-ce que Enregistrement audio passerelle ? Continuous audio recording of all conversations and alarms on the bridge as mandated by SOLAS for investigation and safe...
- Qu'est-ce que Enregistrement de température ? The continuous recording of temperature measurements within cargo tanks or lines to ensure safe transport and quality co...
- Qu'est-ce que Enregistreur de données moteur ? A device or software system that automatically records and stores key engine parameters for performance monitoring, diag...
- Qu'est-ce que Entretien du Turbocompresseur ? Scheduled inspection, cleaning, and servicing of the engine turbocharger to ensure optimal performance and prevent break...
- Qu'est-ce que Erreur de déviation de route ? The perpendicular distance between a vessel's actual position and the planned track line, used for navigation accuracy.
- Qu'est-ce que Erreur de gyrocompas ? An inaccuracy or malfunction of the ship’s gyro compass, resulting in incorrect heading information displayed to bridge ...
- Qu'est-ce que Estimation de la Période de Roulis ? An evaluation of the time taken for a vessel to complete one full roll oscillation, essential for stability analysis and...
- Qu'est-ce que Estimation de l’angle de dérive ? The calculated or visually assessed angle between a vessel’s heading and actual course over ground, caused by wind or cu...
- Qu'est-ce que Estimation de l’Effet Coussin ? An assessment of the air or water pressure that builds up between a vessel and the berth or another vessel, influencing ...
- Qu'est-ce que Estimation de l’Effet d’Aspiration ? The assessment of negative pressure that draws a vessel toward another object or structure during close-quarter manoeuvr...
- Qu'est-ce que Estimation du Point de Pivot ? Calculation of the vessel’s instantaneous longitudinal pivot point to predict turn characteristics in low-speed manoeuvr...
- Qu'est-ce que ETA confirmée ? Formal confirmation that a vessel’s estimated time of arrival is correct and accepted by both reporting vessel and autho...
- Qu'est-ce que ETA confirmée ? Affirmation that the vessel's estimated time of arrival at a specific point has been checked and is accurate based on cu...
- Qu'est-ce que ETA inchangée ? Confirmation that the vessel’s estimated time of arrival remains as previously reported.
- Qu'est-ce que ETA révisée ? Notification that a vessel’s previously declared estimated time of arrival has changed and updated information is provid...
- Qu'est-ce que Exercice de Lutte contre la Pollution ? Planned harbour drill simulating oil-spill response, including boom deployment, skimmer operation and multi-agency commu...
- Qu'est-ce que Exercice d’abandon du navire ? A mandatory exercise in which crew and passengers practice procedures for safely abandoning the vessel and boarding life...
- Qu'est-ce que Exercice d’inondation ? A mandatory exercise in which crew practice responding to flooding, including detection, boundary establishment, and use...
- Qu'est-ce que Exercice incendie ? A mandatory exercise where crew practice procedures for responding to fire emergencies, including alarms, mustering, and...
- Qu'est-ce que Exercices de canot de sauvetage ? Regular training exercises involving the launching and operation of lifeboats as per SOLAS requirements.
- Qu'est-ce que Exercices de tir ? Planned military or naval operations in which weapons are fired in designated sea areas, usually requiring ships to keep...
- Qu'est-ce que Expansion de la cargaison ? The increase in cargo volume due to temperature rise, requiring careful calculation and monitoring to avoid overflow or ...
- Qu'est-ce que Extension de Glace Fixe ? Rapid seaward growth of shore-fast ice, restricting manoeuvring space and increasing risk of besetment for vessels.
F
- Qu'est-ce que Feu de navigation de secours ? A portable or fixed battery-powered navigation light used to maintain minimum required navigation signals in the event o...
- Qu'est-ce que Feux d'Alignement de Quai ? Pair or range of fixed shore lights that provide visual guidance to vessels for centreline alignment during final approa...
- Qu'est-ce que Filtre d’Air de Démarrage ? A filter installed in the starting air system to remove contaminants from compressed air before it reaches engine cylind...
- Qu'est-ce que Fin de l’exercice ? Confirmation that a safety, fire, or emergency response drill has been carried out and all required actions are complete...
- Qu'est-ce que Fin d’exercice ? Formal declaration that a safety or emergency drill has been carried out as scheduled and all required actions are compl...
- Qu'est-ce que Fix de position satellite ? A position determined using satellite navigation signals, typically from systems like GPS or GLONASS, used for precise s...
- Qu'est-ce que Fonctionnement à Faible Charge ? Operating main engines or generators at reduced output, often during harbor stay or maneuvering, requiring special monit...
- Qu'est-ce que Formation d’urgence ? Structured instruction and practice provided to crew members to ensure preparedness for handling emergencies such as fir...
- Qu'est-ce que Fraction d’Eau ? A measurement indicating the percentage of water present in a liquid cargo, essential for determining product quality an...
- Qu'est-ce que Fréquence de détresse ? A radio frequency internationally allocated for maritime distress, safety, and calling, such as VHF channel 16 (156.8 MH...
G
- Qu'est-ce que Garde d’air ? The vertical distance from the waterline to the highest point of the vessel, used to determine safe passage under bridge...
- Qu'est-ce que Garde libre sous le pont ? The vertical distance between the lowest part of the bridge span and the highest point of the vessel, ensuring safe pass...
- Qu'est-ce que Garde sous quille ? Vertical distance between the lowest point of a vessel’s keel and the seabed referenced to chart datum; the key safety m...
- Qu'est-ce que Gaz Inerte ? A non-flammable gas used to reduce the oxygen content in cargo tanks, preventing explosion risks during the transport or...
- Qu'est-ce que Gestion Automatique de la Puissance ? A computerized system on board ships that monitors and optimizes power generation and distribution automatically, ensuri...
- Qu'est-ce que Gestion des ressources de la passerelle ? The effective use and coordination of all available bridge resources—personnel, equipment, and information—to ensure saf...
- Qu'est-ce que Gestion du Brûleur de Chaudière ? The control and monitoring of burner operations on marine boilers to ensure safe and efficient ignition, combustion, and...
- Qu'est-ce que Gouvernail de secours ? An alternative manual or powered system used to control the ship’s rudder if primary steering gear fails.
- Qu'est-ce que Gyrocompas non fiable ? A warning that the vessel’s gyrocompass cannot be trusted for accurate heading information.
- Qu'est-ce que Générateur de gaz inerte ? A shipboard unit that produces inert gas, primarily used on tankers to maintain a non-flammable atmosphere in cargo tank...
- Qu'est-ce que Générateur de secours ? A dedicated generator that supplies electrical power to essential systems during main power failure, as required by SOLA...
- Qu'est-ce que Générateur d’Eau Douce ? A shipboard device that produces potable freshwater from seawater using evaporation and condensation, essential for crew...
H
- Qu'est-ce que Haute tension ? Warning regarding electrical systems or cables carrying dangerous voltage levels, requiring safety precautions.
- Qu'est-ce que Homme à la mer ? Emergency indicating that a person has fallen from a vessel into the water and immediate rescue actions are required.
- Qu'est-ce que Homogénéisateur d’Huile de Combustible ? A machine that breaks down asphaltene clusters and ensures uniform mixing of fuel oil, improving combustion quality and ...
- Qu'est-ce que Huile de palier principal ? Lubricating oil supplied to the main engine's main bearings, essential for reducing friction and preventing overheating ...
- Qu'est-ce que Huile de Réducteur ? Lubricating oil specifically formulated for use in reduction gearboxes, ensuring smooth power transmission and preventin...
- Qu'est-ce que Hélice engagée ? A condition where the propeller is entangled with ropes, nets, or debris, affecting maneuverability.
- Qu'est-ce que Hélice à pas variable ? A propeller with blades whose pitch can be adjusted while running, allowing for variable thrust and improved maneuverabi...
I
- Qu'est-ce que Inclinaison de la Rampe de Mise à Quai ? The measured incline of a docking ramp, influencing the safe entry, exit, and support of a vessel during docking or undo...
- Qu'est-ce que Indicateur de Moteur Principal ? An instrument that displays key operational parameters of the main engine, such as load, RPM, and cylinder pressures, ai...
- Qu'est-ce que Indice d’Efficacité Énergétique ? Calculated parameter (EEXI/EEOI) expressing CO₂ emitted per transport work, mandatory under IMO MARPOL Annex VI.
- Qu'est-ce que Indiquez vos intentions ? Request for a vessel to state its planned manoeuvre, course, or operational actions to aid traffic coordination.
- Qu'est-ce que Informer le pilote ? Request for instructions, information, or confirmation from the maritime pilot regarding navigation or maneuvers.
- Qu'est-ce que Informez sur le trafic ? Request for current information about vessel traffic, movement, or congestion in a specific area.
- Qu'est-ce que Inondation Salle des Machines ? The presence or rapid ingress of water in the engine room spaces, posing a serious risk to machinery and vessel safety, ...
- Qu'est-ce que Inspection Antisalissure ? Port state or class survey checking hull coating compliance with IMO AFS Convention and assessing biological growth.
- Qu'est-ce que Inspection de Marge Sous-Quille ? Hydrographic assessment confirming minimum clearance between keel and seabed along planned passage meets safety criteria...
- Qu'est-ce que Interférence magnétique ? Disruption or deviation of magnetic compass readings due to local magnetic fields, ship’s structure, or electrical equip...
- Qu'est-ce que Interrupteur d’Arrêt d’Urgence ? A manually operated control that immediately halts machinery or electrical equipment in emergencies to prevent damage, f...
- Qu'est-ce que Intégration des Surfaces de Contrôle ? The coordinated operation of rudders, stabilisers, and other movable surfaces to achieve optimal vessel steering and sta...
- Qu'est-ce que Inventaire des Gaz à Effet de Serre ? Comprehensive report of CO₂, CH₄ and N₂O emissions from vessel operations for regulatory compliance and environmental ma...
- Qu'est-ce que Inversion du moteur principal ? A maneuver in which the main engine’s rotation direction is reversed, allowing the ship to go astern or stop.
- Qu'est-ce que Isolement de la Salle des Machines ? The process or system of segregating the engine room from other compartments to contain hazards such as fire, flooding, ...
- Qu'est-ce que Itinéraire d’évacuation ? A pre-designated path marked and maintained on board for safe and efficient evacuation during emergencies.
J
- Qu'est-ce que Jauge Fermée ? A method of measuring tank levels or taking samples without exposing tank contents to the atmosphere, using closed devic...
- Qu'est-ce que Jaugeage radar ? Use of radar technology to measure tank level, ullage, or interface without contact, widely used for precise monitoring ...
- Qu'est-ce que Je compte dépasser ? Announcement that a vessel plans to pass another vessel ahead on a specified side in accordance with the COLREGS.
- Qu'est-ce que Joint Tube d’Étambot ? A sealing device at the exit point of the ship’s propeller shaft through the hull, preventing water ingress and oil leak...
L
- Qu'est-ce que Lavage au Pétrole Brut ? The process of cleaning cargo tanks using high-pressure crude oil jets during or after discharge to reduce residual carg...
- Qu'est-ce que Liaison terminale ? The appointed person or office responsible for communication and coordination between ship and terminal during cargo ope...
- Qu'est-ce que Liaison terminale ? The person or office responsible for communication and coordination between ship and terminal during cargo operations.
- Qu'est-ce que Lieu d’urgence ? The specific onboard location where an emergency incident—such as fire, flooding, or injury—has occurred and emergency r...
- Qu'est-ce que Ligne de Descente ? A flexible line or pipe used to transfer liquids vertically in a tank, commonly for sampling, loading, or discharging at...
- Qu'est-ce que Ligne de distance électronique ? A digital tool on radar/ECDIS allowing navigators to set and measure a precise distance from own ship to a selected poin...
- Qu'est-ce que Ligne de décantation ? A dedicated pipeline onboard a tanker used to remove the final residues or small quantities of cargo remaining in tanks ...
- Qu'est-ce que Ligne de relèvement électronique ? A digital navigational tool on ECDIS or radar for plotting and monitoring bearings to fixed or moving targets, improving...
- Qu'est-ce que Ligne de retour ? A pipeline connecting cargo manifold or transfer system back to the tank, used for circulation or pressure control durin...
- Qu'est-ce que Ligne de retour ? A pipeline connecting the manifold or transfer system back to a tank, used for circulating cargo, line clearing, or pres...
- Qu'est-ce que Ligne de wheel-over ? A track line shown on chart or radar which, when crossed, indicates the precise moment to start the wheel-over so that t...
- Qu'est-ce que Ligne d’indexation parallèle ? A radar-derived reference line drawn parallel to the vessel's intended track, used to monitor cross-track error by keepi...
- Qu'est-ce que Limitation de puissance de l’arbre ? A set operational restriction on the maximum shaft power output, typically to comply with EEXI and MARPOL Annex VI energ...
- Qu'est-ce que Limite de Vitesse au Port ? The officially published maximum speed permitted for vessels within a designated harbour or port area, set by local auth...
- Qu'est-ce que Limite de Vitesse d'Accostage ? Maximum allowable approach speed normal to berth to prevent fender overload and structural damage.
- Qu'est-ce que Limiteur d’Angle de Gouvernail ? Device or setting restricting maximum rudder angle to prevent over-steer at speed or protect steering gear.
- Qu'est-ce que Liste des Machines Critiques ? An official document or database on board identifying all essential machinery whose failure would significantly affect v...
- Qu'est-ce que Lâchez la garde tribord ? Mooring command to release or cast off the starboard (right) mooring line or cable.
- Qu'est-ce que Lâchez tout ? Final order to release all mooring lines, allowing the vessel to depart from berth.
M
- Qu'est-ce que Machine Butterworth ? A mechanical rotating cleaning device used for washing and gas freeing ship cargo tanks using pressurized jets of water ...
- Qu'est-ce que Maintenez la position ? Instruction to maintain current position, either at anchor or underway, until further orders are received.
- Qu'est-ce que Maintien par Positionnement Dynamique ? A control mode where a vessel maintains its heading and position automatically using thrusters and propellers, essential...
- Qu'est-ce que Maintien à Vitesse Nulle ? A function in vessel control systems where speed is automatically kept at zero, holding position against wind, current, ...
- Qu'est-ce que Manomètre à Piston ? A pressure measurement device using a piston and cylinder assembly, typically used to calibrate pressure systems on tank...
- Qu'est-ce que Manuel de Tracés Radar ? A publication or onboard manual containing standardized instructions, techniques, and worksheets for manually plotting r...
- Qu'est-ce que Manutention des amarres ? The operation of preparing, passing, securing, and tending mooring lines to assist in berthing or unberthing a vessel.
- Qu'est-ce que Manœuvre d'Arrêt Rapide ? Emergency procedure whereby engine is set full astern and helm hard over to rapidly stop vessel’s forward motion within ...
- Qu'est-ce que Marge d'effet squat ? The additional draught margin applied to account for the increased draught of a vessel due to the squat effect in shallo...
- Qu'est-ce que Marge de tirant d'eau dynamique ? An additional draught margin included to account for dynamic effects such as squat, trim, and vessel movement in shallow...
- Qu'est-ce que Marque d’eaux sûres ? IALA buoyage mark indicating there is navigable water all around the mark.
- Qu'est-ce que Mayday Relay ? A distress message transmitted by a vessel or station on behalf of another vessel, aircraft, or person in grave and immi...
- Qu'est-ce que Maître de Chargement ? The senior person responsible for supervising all cargo operations on board a tanker during loading, ensuring safety, co...
- Qu'est-ce que Mesure d'Ullage ? The process of measuring the empty space (ullage) in a cargo tank to determine the amount of liquid cargo loaded or rema...
- Qu'est-ce que Mesure Doppler Acoustique ? A navigational process using Doppler sonar to measure vessel speed and direction relative to water, crucial for precise ...
- Qu'est-ce que Mettez une garde simple ? Order to reduce the number of mooring lines on each bollard to one, preparing the vessel for departure.
- Qu'est-ce que Mise à Jour du Courant de Marée ? New information on rate and set of tidal current issued by VTS or hydrographic authority for local area.
- Qu'est-ce que Mode Calcul du Glissement ? A navigational mode where a vessel’s slip—the difference between theoretical and actual movement—is monitored and calcul...
- Qu'est-ce que Mode de Contrôle Passerelle ? A mode in which the propulsion and critical machinery are operated directly from the bridge, with command transferred fr...
- Qu'est-ce que Mode de Stabilisation de Taux ? Autopilot setting that dampens oscillations by keeping rate of turn constant once a target value is reached during manoe...
- Qu'est-ce que Mode Manœuvre au Joystick ? A control setting that allows a vessel to be steered and positioned using a joystick, integrating thrusters and main pro...
- Qu'est-ce que Modifiez le cap ? Instruction to change the vessel’s current heading in order to avoid danger or comply with traffic management.
- Qu'est-ce que Modèle d’Allocation de Poussée ? A computational approach for optimally distributing propulsion thrust among multiple thrusters to achieve desired vessel...
- Qu'est-ce que Moniteur de Rejet d’Huile ? An electronic device used to measure and control oil content in discharged water, ensuring compliance with MARPOL and po...
- Qu'est-ce que Montée en Puissance des Propulseurs ? A procedure where thrusters are gradually powered up and tested before being engaged for manoeuvring or station keeping.
- Qu'est-ce que Mélange de Cargaisons ? The controlled mixing of different cargoes or grades in a tank to achieve a specified product quality or specification, ...
- Qu'est-ce que Méthode d’indexation parallèle ? A radar navigation technique in which fixed radar echoes are kept on predetermined parallel lines to verify the vessel r...
N
- Qu'est-ce que Navire d'escorte ? A vessel assigned to accompany another ship for navigational assistance, safety, security, or regulatory compliance in p...
- Qu'est-ce que Navire suiveur ? A vessel which is navigating behind another in the same direction, often in a convoy or traffic lane.
- Qu'est-ce que Niveau du Réservoir Dégazeur ? The measured height of water within the deaerator tank, critical for ensuring proper removal of dissolved gases from boi...
- Qu'est-ce que Niveau d’Eau Faible de la Chaudière ? A hazardous boiler condition where water level falls below the minimum safe mark, risking tube overheating, boiler damag...
- Qu'est-ce que Nombre de personnes ? Total count of persons (crew and passengers) on board, often requested for safety or SAR purposes.
O
- Qu'est-ce que Observation météorologique de navire ? Recorded meteorological observations from ships, submitted to authorities or meteorological agencies for forecasting and...
- Qu'est-ce que Obstacle signalé ? Notification that a hazard, such as a floating object or wreck, is present and may endanger navigation.
- Qu'est-ce que Obstacle signalé ? Notification that a physical hazard, such as a wreck, buoy, or floating object, has been observed in a navigable area, r...
- Qu'est-ce que Opération d'Inertage ? The process of introducing inert gas into cargo tanks to reduce oxygen concentration, preventing flammable mixtures duri...
- Qu'est-ce que Opération du souffleuse de suie ? The process of using a soot blower system to remove accumulated soot from boiler tubes or exhaust gas economizers, ensur...
- Qu'est-ce que Opération terminée ? Notification that a particular port, cargo, or navigational operation has been fully finished.
- Qu'est-ce que Opérations d’amarrage ? All procedures related to securing or unmooring a vessel to or from a berth, buoy, or anchorage.
P
- Qu'est-ce que Pan Pan ? A radiotelephony urgency signal indicating a situation urgent but not immediately life-threatening; always spoken in Eng...
- Qu'est-ce que Panneau de commande propulsion ? The main interface on the bridge or in the engine room for controlling the vessel’s propulsion system, including speed, ...
- Qu'est-ce que Panneau de télémétrie moteur ? A central control panel for monitoring, displaying, and logging engine performance parameters and alarms in real-time, o...
- Qu'est-ce que Panneau générateur de secours ? The control interface for the ship's emergency generator, enabling monitoring, activation, and shutdown of emergency ele...
- Qu'est-ce que Panneau incendie passerelle ? A control panel located on the bridge showing status, zones, and alarms for the ship’s fire detection and suppression sy...
- Qu'est-ce que Partage de Charge Moteur ? The process of distributing electrical or mechanical load evenly between two or more engines or generators operating in ...
- Qu'est-ce que Pas de clearance ? Notification that the vessel does not have authorization or permission to enter, leave, or transit a specific area, port...
- Qu'est-ce que Pas de réponse ? Phrase used to indicate that a called station has not replied within a reasonable time, requiring repeat or escalation o...
- Qu'est-ce que Passerelle en veille ? Notification that the navigating bridge watch is monitoring the working channel and ready to respond immediately.
- Qu'est-ce que Pavillon de remorquage d’urgence ? A strong wire or rope rigged at bow or stern, readily accessible for emergency towing if the vessel becomes disabled.
- Qu'est-ce que Performance de la pompe ? Assessment and monitoring of cargo pump efficiency, capacity, and operation to ensure optimal transfer rates and detect ...
- Qu'est-ce que Perte de propulsion ? Loss of ability to propel the vessel due to engine failure or other mechanical issues.
- Qu'est-ce que Perte d’Efficacité du Gouvernail ? Reduction in steering response due to low water flow over rudder, cavitation, or mechanical limitation.
- Qu'est-ce que Plan de Compensation de la Force Latérale ? A navigational strategy to counteract lateral forces (wind, current, propeller wash) that may cause a vessel to drift si...
- Qu'est-ce que Plan de gestion du bioencrassement ? A documented system required by IMO for vessels to manage and minimize the accumulation of aquatic organisms on hulls an...
- Qu'est-ce que Plan de lutte contre l’incendie ? A detailed, IMO-mandated shipboard diagram showing locations and procedures for firefighting equipment, escape routes, a...
- Qu'est-ce que Plan de lutte contre l’incendie ? A mandatory shipboard document showing fire safety systems, detection, protection, and escape routes as required by SOLA...
- Qu'est-ce que Plan de passage de pilotage ? A detailed route plan, prepared jointly by the master and pilot, outlining intended track, waypoints, speed, and manoeuv...
- Qu'est-ce que Plan d’allocation des remorqueurs ? A detailed arrangement indicating the number, type, and position of tugs assigned to assist a vessel during berthing, un...
- Qu'est-ce que Point de changement de cap ? The charted position at which the rudder is first applied to initiate a planned course alteration so that the vessel fol...
- Qu'est-ce que Point de changement de cap ? A precisely charted position where a ship is required to change its course, usually as part of a passage plan.
- Qu'est-ce que Point de Rapport VTS ? A specifically designated geographical position where a vessel is required to contact and report to the Vessel Traffic S...
- Qu'est-ce que Pollution par hydrocarbures ? Presence or discharge of oil into marine waters from a vessel or facility, constituting a reportable incident and requir...
- Qu'est-ce que Pompe de Ballast Automatique ? An automatic mode setting on the ballast pump, enabling the pump to start and stop based on tank level sensors or a cent...
- Qu'est-ce que Pompe de cale d’urgence ? A portable or dedicated pump used to remove water from the bilge in case of flooding or main pump failure.
- Qu'est-ce que Pompe de décantation ? A pump specifically used for removing remaining cargo or residues from tanks, pipelines, or bilges after main discharge ...
- Qu'est-ce que Pompe de Lubrification de Secours ? A backup pump in the engine room that automatically or manually provides lubrication oil flow if the main pump fails, en...
- Qu'est-ce que Pompe de Refroidissement à l’Eau de Mer ? A pump supplying seawater to coolers for cooling main and auxiliary machinery, essential for temperature regulation and ...
- Qu'est-ce que Pompe de secours à distance ? A pump located outside the machinery space, operated remotely to provide emergency or backup fluid transfer capability.
- Qu'est-ce que Pompe incendie ? A fixed or portable pump designed to supply water to firefighting systems throughout the vessel, essential for controlli...
- Qu'est-ce que Pompe Incendie ? A dedicated pump used to supply seawater to fire hydrants and hoses on board for firefighting operations.
- Qu'est-ce que Porte coupe-feu ? A specially constructed door designed to resist fire and prevent the spread of flames and smoke between compartments or ...
- Qu'est-ce que Position d'urgence ? Location reported by a vessel or person in distress, usually in latitude and longitude for rescue coordination.
- Qu'est-ce que Position de la Crémaillère de Carburant ? The precise setting of the fuel control rack that determines the amount of fuel delivered to each cylinder of a diesel e...
- Qu'est-ce que Position douteuse ? Phrase used to indicate that the vessel's current navigational position cannot be reliably confirmed and may be inaccura...
- Qu'est-ce que Position du Levier de Manoeuvre ? The selected position of the manoeuvring lever on the bridge or engine control console, determining direction and speed ...
- Qu'est-ce que Position franchie ? Notification that a vessel has just crossed or gone abeam of a specified position, buoy, or waypoint.
- Qu'est-ce que Position Remorqueur d’Arrière ? The designated location of a tug at the stern of a vessel, used to provide pulling or braking force during manoeuvring, ...
- Qu'est-ce que Position Remorqueur d’Avant ? The assigned and maintained location of a tug at the bow of a vessel to provide pushing, pulling, or steering assistance...
- Qu'est-ce que Poste de barre de secours ? A dedicated station—usually aft in the steering gear room—used to control the ship’s steering in the event of bridge ste...
- Qu'est-ce que Poste de barre d’urgence ? A designated location, often aft, equipped for manual control of the ship’s rudder if the main steering gear or control ...
- Qu'est-ce que Poste de Commande Local ? A designated engine room console enabling manual operation and monitoring of main engine or machinery independently of t...
- Qu'est-ce que Poste de contrôle d’urgence ? A designated area from which emergency operations such as firefighting, ventilation control, and communication are coord...
- Qu'est-ce que Poste de lutte contre l’incendie ? A designated area on board equipped with firefighting equipment and control panels for managing emergency fire situation...
- Qu'est-ce que Poussée Inverse du Jet d’Eau ? A manoeuvring action where the direction of waterjet propulsion is reversed, providing astern thrust for stopping or mov...
- Qu'est-ce que Pression de coup de bélier ? A sudden increase in pressure within a cargo pipeline or tank, usually caused by rapid valve closure or pump operation, ...
- Qu'est-ce que Pression du Collecteur ? The pressure measured at the cargo manifold during loading or discharging, crucial for monitoring safe and efficient car...
- Qu'est-ce que Pressurisation des Citernes ? Maintaining a set positive pressure in a cargo tank, often using inert gas, to prevent air entry and reduce fire or expl...
- Qu'est-ce que Priorité de détresse ? The highest level of urgency assigned to radio or communication messages involving imminent danger and the need for imme...
- Qu'est-ce que Prise de Force ? A mechanical device that transfers engine power to auxiliary equipment such as generators or pumps, typically via a shaf...
- Qu'est-ce que Problème machine ? A condition in which a vessel’s propulsion machinery is malfunctioning or unreliable, possibly affecting speed and manoe...
- Qu'est-ce que Procédure de changement de carburant ? A documented process for safely switching the ship’s fuel supply from one grade or type to another, often to comply with...
- Qu'est-ce que Procédure de Contrôle COV ? Shipboard plan to minimise Volatile Organic Compound emissions during loading, voyage and discharge of crude oil cargoes...
- Qu'est-ce que Procédure de Réduction du Bruit ? Harbour authority directive requiring vessels to minimise machinery and whistle noise, especially at night, to protect n...
- Qu'est-ce que Procédure de transfert de la barre ? The standardised method for transferring control of the ship’s steering from one helm station or operator to another, en...
- Qu'est-ce que Procédure d’urgence ? A set of predefined actions and communications for crew to follow in response to emergencies such as fire, collision, gr...
- Qu'est-ce que Profondeur de conception du chenal ? The minimum depth of a navigational channel as determined and maintained by authorities for safe passage of vessels, ref...
- Qu'est-ce que Protecteur d’Accouplement de Pompe ? A mechanical safety cover installed over rotating pump couplings to prevent injury and contain parts in the event of fai...
- Qu'est-ce que Prédicteur de Vitesse de Giration ? ECDIS or radar-derived graphic that projects vessel’s future position based on present speed and rate of turn settings.
- Qu'est-ce que Prévision de Dérive des Glaces ? Forecast of movement and speed of pack or floe ice issued by ice service for route planning.
- Qu'est-ce que Prévision de Dérive d’Iceberg ? A prediction of the future movement and position of icebergs in a given maritime area, based on meteorological and ocean...
- Qu'est-ce que Prévision de Jusant ? Tabulated forecast time and rate of falling tide current used for harbour passage planning.
- Qu'est-ce que Prévision de Marée Montante ? Forecast information regarding the timing and height of the next incoming (flood) tide, crucial for safe navigation and ...
- Qu'est-ce que Prévision d’Orage ? Prognostic bulletin giving probability, timing and movement of convective cells within shipping area.
- Qu'est-ce que Purge à l’azote ? Introduction of nitrogen gas into tanks or pipelines to remove oxygen or flammable vapours, ensuring an inert atmosphere...
- Qu'est-ce que Purificateur d’Huile de Graissage ? A centrifugal device used on board to remove water and contaminants from lubricating oil, ensuring optimal engine operat...
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- Qu'est-ce que Raccordement de tuyau ? The act of securing cargo hoses between ship and shore, or between tanks and manifolds, ensuring a leak-free and safe ca...
- Qu'est-ce que Radar de citerne ? Radar-based electronic device for real-time measurement of cargo tank level, ullage, or interface, providing accurate, n...
- Qu'est-ce que Rapport d'État de Mer ? Periodic description of significant wave height, period and swell state transmitted for routing and safety assessments.
- Qu'est-ce que Rapport de Bloc de Glace ? An official communication or broadcast of the sighting and position of medium-sized floating ice fragments (bergy bits),...
- Qu'est-ce que Rapport de Code Synoptique ? A standardized numerical weather message (per WMO/IMO) reporting synoptic-scale observations, transmitted by ships for m...
- Qu'est-ce que Rapport de Direction de Houle ? Statement giving the dominant direction, height and period of the prevailing ocean swell for route planning and seakeepi...
- Qu'est-ce que Rapport de Direction du Vent ? An official meteorological report or observation stating the current direction from which the wind is blowing, vital for...
- Qu'est-ce que Rapport de Données Océanographiques ? A formal report or transmission containing oceanographic data such as temperature, salinity, current, and sea state, as ...
- Qu'est-ce que Rapport de Lisière de Glace ? Update giving the geographic position of the ice edge separating open water from pack ice, critical for polar routing.
- Qu'est-ce que Rapport de Pression Barométrique ? Regularly transmitted statement of current atmospheric pressure and trend for meteorological data exchange and storm tra...
- Qu'est-ce que Rapport de Tendance Barométrique ? Synoptic code group summarising rate and character of atmospheric pressure change during past three hours, broadcast in ...
- Qu'est-ce que Rapport d’Observation de Brume Sèche ? A message reporting reduced visibility due to haze, specifying affected areas and visibility range, commonly issued for ...
- Qu'est-ce que Rapport sur les déchets marins ? A report made to authorities or VTS regarding observed floating or drifting marine debris that may pose a hazard to navi...
- Qu'est-ce que Rassemblement d'Urgence ? The immediate assembly of all crew and passengers at assigned muster stations in response to an alarm or emergency situa...
- Qu'est-ce que Rassemblement de l’équipage ? The assembly of all crew at designated muster stations for roll-call, instruction, or emergency drill, as per muster lis...
- Qu'est-ce que Rassemblement des blessés ? The assembly and accounting of crew and passengers following an incident to identify and assist injured or missing perso...
- Qu'est-ce que Recherche par quadrant ? A systematic search pattern, typically used in SAR operations, covering four quadrants from a datum point to locate pers...
- Qu'est-ce que Recirculation de la citerne ? The process of circulating cargo within a tank, using pumps and pipelines, to maintain uniform temperature and prevent s...
- Qu'est-ce que Redressez ? Helm order given to check the vessel’s swing and prevent further turning, typically after a large rudder movement.
- Qu'est-ce que Refroidisseur d’Air de Balayage ? A heat exchanger that cools scavenge air supplied to main engine cylinders, increasing air density and engine efficiency...
- Qu'est-ce que Refroidisseur d’Huile Hydraulique ? A heat exchanger used to maintain the temperature of hydraulic oil within safe operating limits for reliable system perf...
- Qu'est-ce que Registre de Déchargement des Déchets ? A mandatory logbook entry or record made by the ship to document every instance of garbage discharge or disposal at sea ...
- Qu'est-ce que Rejoindre le convoi ? Instruction or request for a vessel to assemble and proceed as part of an organized convoy for mutual safety, security, ...
- Qu'est-ce que Relais de détresse ? The retransmission of a received distress call or message by a station not in distress, alerting other ships or coast st...
- Qu'est-ce que Relevé de Tirant d’Eau ? A method of determining the weight of cargo loaded or discharged by measuring the vessel’s draft marks before and after ...
- Qu'est-ce que Relèvement terrestre ? A position established by bearings or distances to known land features or aids to navigation, not using satellites.
- Qu'est-ce que Remorquage d'urgence ? The act of towing a vessel in distress or unable to maneuver using an emergency tow line or arrangement as per SOLAS req...
- Qu'est-ce que Remplissage final ? The final stage of tank filling during cargo loading, requiring slow rates and careful monitoring to prevent overfilling...
- Qu'est-ce que Remplissage tampon du réservoir ? Process of introducing inert gas (often nitrogen) into the tank vapor space to maintain safe conditions, prevent air ing...
- Qu'est-ce que Reprenez la route ? Order authorising a vessel to continue its original voyage after a temporary stop, alteration, or holding pattern.
- Qu'est-ce que Repère de Distance d'Approche ? Painted, lit, or electronic reference indicating remaining longitudinal distance to berth face during final approach.
- Qu'est-ce que Restez à l'écart ? Instruction to maintain a safe distance from a specified vessel, area, or hazard to prevent collision, obstruction, or r...
- Qu'est-ce que Restez à l’écart ? Instruction to remain at a safe distance from a specified vessel, area, or hazard.
- Qu'est-ce que Restez à l’écoute ? Instruction to maintain a listening watch on a specified VHF channel for further communication or safety messages.
- Qu'est-ce que Retour de Vapeur ? A pipeline or hose system connecting ship and shore to return displaced cargo vapours to the terminal during loading.
- Qu'est-ce que Rinçage de canalisation ? Process of cleaning cargo or ballast pipelines by circulating water, air, or another fluid to remove remaining product a...
- Qu'est-ce que Rinçage de canalisation ? Process of cleaning pipelines by circulating water, air, or another fluid to remove product and contaminants.
- Qu'est-ce que Risque de collision ? Phrase indicating that two or more vessels are on courses or at speeds that may result in collision unless action is tak...
- Qu'est-ce que Risque d’explosion ? The probability of explosion due to flammable vapours, gases, or materials present in a compartment or operational area.
- Qu'est-ce que Risque d’explosion ? The immediate or potential danger of explosion caused by flammable vapours, gases, or dust in confined spaces or cargo a...
- Qu'est-ce que Risque d’échouement ? Potential danger of the vessel running aground due to shallow water or navigational error.
- Qu'est-ce que Route effectivement suivie ? The actual path of a vessel over the ground, as determined by position fixes, regardless of set or drift.
- Qu'est-ce que Route en Eaux Profondes ? A route within defined limits in deep water that is charted and designated for the passage of vessels requiring deep dra...
- Qu'est-ce que Récepteur de pig ? A pressure vessel or chamber installed at the end of a pipeline to receive the pig after cleaning, used in cargo or ball...
- Qu'est-ce que Récepteur de pig ? A pressure vessel or chamber at the end of a pipeline to receive the pig after cleaning or product transfer, used in car...
- Qu'est-ce que Réception Carte Radiofax ? Confirmation that a complete facsimile weather chart has been successfully received via HF radio and is ready for naviga...
- Qu'est-ce que Réduction de la Vitesse d’Ancrage ? Deliberate decrease in vessel speed to a safe limit before anchor deployment, minimizing anchor dragging and ensuring pr...
- Qu'est-ce que Réduisez à cinq ? Helm order instructing the helmsman to reduce rudder angle to five degrees while maintaining course adjustment.
- Qu'est-ce que Réglage de la Vitesse du Moteur ? The selected rotational speed at which a ship’s engine is set to operate, typically determined by bridge orders for mane...
- Qu'est-ce que Répartiteur d’Air de Démarrage ? A mechanical device that controls the timing and sequence of starting air supplied to engine cylinders during main engin...
- Qu'est-ce que Réponse d'urgence ? Immediate actions taken by trained crew to mitigate emergencies such as fire, flooding, collision, or medical incidents,...
- Qu'est-ce que Réponse à la Charge du Moteur ? The manner and speed at which the main engine adapts to sudden changes in power demand, crucial for manoeuvring and heav...
- Qu'est-ce que Réseau principal incendie ? A fixed piping system on a ship delivering water under pressure for firefighting throughout the vessel.
- Qu'est-ce que Réserve de Puissance Arrière ? Remaining astern propulsion capacity beyond that required for standard manoeuvre, ensuring additional stopping margin.
- Qu'est-ce que Réserve d’eau d’urgence ? Stored or alternate source of potable water kept on board for survival use in emergencies or after system failure.
- Qu'est-ce que Réservoir de Boues du Purificateur ? A tank designed to collect and store sludge and contaminants removed by fuel or lube oil purifiers before final disposal...
- Qu'est-ce que Réservoir de Gazole ? A dedicated tank for storing diesel oil, used for main engines, auxiliary engines, or emergency generators on board ship...
- Qu'est-ce que Réservoir de Pression Hydrophore ? A pressurized tank in a ship’s fresh water system that maintains constant water pressure for domestic and service use th...
- Qu'est-ce que Réservoir Double Fond ? A compartment at the bottom of the ship, between the inner and outer hull, used for ballast water, fuel, or as a safety ...
- Qu'est-ce que Réservoir Principal d’Air ? A large pressure vessel that stores compressed air for main engine starting and other critical pneumatic systems, mainta...
- Qu'est-ce que Rétrolavage Automatique ? A system that automatically reverses flow through filters or strainers to remove debris and maintain performance without...
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- Qu'est-ce que Salve de Puissance Incrémentale ? A technique involving small, timed increases in engine or thruster power to control a vessel’s position or heading preci...
- Qu'est-ce que Serpentin chauffant ? A tubular device installed inside cargo tanks for indirect heating of cargoes, especially heavy oils, to maintain suitab...
- Qu'est-ce que Signal de détresse ? A recognized sound, light, radio, or visual signal sent by a vessel or person indicating imminent danger and urgent need...
- Qu'est-ce que Signal de détresse ? A signal indicating a vessel or person is in grave and imminent danger and requires immediate assistance. Includes visua...
- Qu'est-ce que Signal de Violente Tempête ? An official maritime signal indicating imminent or present severe gale conditions (Beaufort Force 9–10) requiring vessel...
- Qu'est-ce que Signalement d'urgence ? The formal communication and documentation of an emergency situation to the bridge, VTS, or authorities, following stand...
- Qu'est-ce que Signalez les dommages ? Instruction to inform relevant authorities or stations of any structural, mechanical, or environmental damage sustained,...
- Qu'est-ce que Signalez un incendie ? A prompt or instruction to immediately communicate the occurrence, location, and extent of a fire on board or ashore, us...
- Qu'est-ce que Silence radio ? A formal order requiring all stations to cease transmitting on a frequency, usually for distress or security reasons.
- Qu'est-ce que Sortie de secours ? A clearly marked route or door for rapid escape from a compartment or area during emergencies.
- Qu'est-ce que Soupape de Décharge de Vapeur ? A valve that releases excess steam from boilers or turbines to prevent overpressure, often routed to the atmosphere or c...
- Qu'est-ce que Soupape de décharge d’explosion carter ? A safety device fitted on engine crankcases that vents pressure and flame in the event of a crankcase explosion, reducin...
- Qu'est-ce que Soupape Pression-Vide ? A safety device on cargo tank vent lines that automatically opens or closes to maintain safe pressure and prevent overpr...
- Qu'est-ce que Source d’oxygène d’urgence ? Portable or fixed supply of medical oxygen available for emergency use by crew or passengers in case of fire, smoke or m...
- Qu'est-ce que Station côtière ? A shore-based VHF or radio station responsible for maritime safety and communication in a designated coastal area.
- Qu'est-ce que Stratégie de Contrôle d’Inertie ? The procedure and logic used to manage a vessel's inertia during changes in speed or heading, optimizing response time a...
- Qu'est-ce que Sulfure d’hydrogène ? A highly toxic and flammable gas (H₂S) present in some crude oils and products; detection and management are critical fo...
- Qu'est-ce que Sur zone ? Statement indicating that the vessel, aircraft, or rescue unit has arrived at the position of an incident or casualty.
- Qu'est-ce que Surcharge du Moteur Électrique ? A condition in which an electric motor draws current above its rated limit, risking overheating and possible failure unl...
- Qu'est-ce que Surveillance de l'Angle de Dérive ? Continuous observation of vessel’s lateral drift angle relative to track to ensure safe approach trajectory during docki...
- Qu'est-ce que Surveillance de la Tension d'Amarrage ? Real-time supervision of static and dynamic loads on mooring lines to maintain safe tension limits under environmental f...
- Qu'est-ce que Surveillance de l’intégrité de la position ? Continuous verification of the reliability and accuracy of the ship’s position as provided by navigation systems.
- Qu'est-ce que Surveillance de Vague de Chaleur ? Pre-warning by meteorological authority that sustained high air temperatures are likely within 48 h, possibly affecting ...
- Qu'est-ce que Surveillance des contraintes ? Continuous assessment of ship or tank structure for stress levels, especially during cargo operations, to ensure limits ...
- Qu'est-ce que Synchronisation du générateur ? The process of matching the voltage, frequency, and phase of an incoming generator to the busbar before connecting it in...
- Qu'est-ce que Synchronisation du Pas de l’Hélice ? Matching of pitch angles on controllable-pitch propellers to balance thrust and avoid yaw during twin-screw operations.
- Qu'est-ce que Système d'Accostage Laser ? High-precision laser array projecting range and angular deviation data to vessel displays for centimetre-level berthing ...
- Qu'est-ce que Système de Contrôle à Distance ? A system allowing the operation and monitoring of shipboard machinery or equipment from a location other than the equipm...
- Qu'est-ce que Système de délestage ? An automated system that disconnects non-essential electrical loads to prevent total blackout when generator capacity is...
- Qu'est-ce que Système de Jaugeage de Cuve ? An electronic or manual system for measuring liquid levels in ship tanks, such as fuel, ballast, or fresh water, to ensu...
- Qu'est-ce que Système de Rapport Obligatoire ? A regulatory system requiring vessels to provide voyage information at specified locations or intervals, typically enfor...
- Qu'est-ce que Système d’Eau de Refroidissement ? The network of pipes, pumps, and heat exchangers circulating water to remove excess heat from the main engine and auxili...
- Qu'est-ce que Système d’Interverrouillage Moteur ? An automated safety mechanism that prevents certain engine operations unless predefined conditions are satisfied, protec...
- Qu'est-ce que Système mondial de navigation ? A satellite-based navigation system such as GPS, GLONASS, Galileo, or BeiDou, providing worldwide position, navigation, ...
- Qu'est-ce que Séquence de chargement ? The planned order and method for loading cargoes into tanks to maintain vessel stability, prevent contamination, and com...
- Qu'est-ce que Séquence de chargement ? The planned order and method for loading cargoes into tanks to maintain stability, prevent contamination, and comply wit...
- Qu'est-ce que Séquence de Rétablissement après Panne Totale ? A prescribed procedure to restore shipboard power and restart essential systems after total electrical blackout, ensurin...
- Qu'est-ce que Séquençage de Cargaison ? The planned order and timing for loading, transferring, or discharging cargoes in different tanks to maintain stability ...
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- Qu'est-ce que Table d’avance et de transfert ? A manoeuvring aid providing predicted advance (distance along original track) and transfer (lateral distance) for specif...
- Qu'est-ce que Tableau de Détection de Gaz ? A monitoring system that displays real-time readings from gas detectors, providing alarms if hazardous or flammable gas ...
- Qu'est-ce que Tableau Principal ? The primary electrical distribution panel on board controlling power supply to all vital systems and equipment, designed...
- Qu'est-ce que Taux de Rotation ? The speed at which a vessel changes its heading, typically measured in degrees per minute and displayed on the bridge in...
- Qu'est-ce que Température de Surface de la Mer ? Measured or satellite-derived temperature of ocean top centimetre, critical for routing, icing and cyclogenesis forecast...
- Qu'est-ce que Température Palier d’Arbre ? The measured temperature of a ship’s main propulsion shaft bearing, monitored continuously to prevent overheating and po...
- Qu'est-ce que Tension de la Remorque du Remorqueur ? The force applied to a tow or mooring line connecting a tug to a vessel, monitored to ensure safe and effective manoeuvr...
- Qu'est-ce que Test de Charge du Générateur ? A controlled procedure for verifying a generator’s capability to supply rated power by gradually applying electrical loa...
- Qu'est-ce que Test de Clapet Antiretour ? A procedural check to verify that a non-return (check) valve allows fluid flow in only one direction, preventing backflo...
- Qu'est-ce que Test de communications ? A check of the operational status and clarity of shipboard, shore, or VTS radio equipment by transmitting test calls and...
- Qu'est-ce que Test de Débit Purificateur ? An operational procedure to verify the flow rate and performance efficiency of the lubricating or fuel oil centrifugal p...
- Qu'est-ce que Test de réponse du régulateur ? A routine operational test to verify that the engine speed governor responds correctly to load changes, ensuring engine ...
- Qu'est-ce que Test de Tuyau ? The procedure of pressure-testing cargo hoses with water or air before use to ensure integrity and compliance with inter...
- Qu'est-ce que Tirant d'eau requis ? Request or statement of the minimum water depth needed for safe passage of a vessel based on its loaded draft.
- Qu'est-ce que Toboggan d’évacuation ? An emergency evacuation device, usually an inflatable or fabric tube, enabling rapid escape from high decks to safe area...
- Qu'est-ce que Toboggan d’évacuation ? An inflatable slide fitted to the ship’s side, designed for rapid evacuation of crew and passengers directly into the se...
- Qu'est-ce que Toboggan d’évacuation ? An inflatable slide or chute deployed to allow rapid evacuation of personnel from ship to liferaft or pier during emerge...
- Qu'est-ce que Toute à bâbord ? Helm order instructing the rudder to be put fully to port (left) for maximum turning effect.
- Qu'est-ce que Toute à tribord ? Helm order instructing the rudder to be put fully to starboard (right) for maximum turning effect.
- Qu'est-ce que Toutes stations ? Universal radio call addressing every vessel or station within radio range, especially for navigational warnings or urge...
- Qu'est-ce que Trace effectivement suivie ? The actual path a vessel follows over the ground, as recorded by position fixes, often used interchangeably with course ...
- Qu'est-ce que Tracés Radar Automatiques ? The process by which radar targets are tracked and collision risk assessed automatically by ARPA systems, displaying rea...
- Qu'est-ce que Trafic d'urgence ? Radio messages of high urgency concerning the safety of a ship, person, or environment, requiring priority over all othe...
- Qu'est-ce que Trafic de détresse ? Radio transmissions exclusively concerning vessels or persons in grave and imminent danger, given absolute priority on a...
- Qu'est-ce que Trafic dense ? A situation or area where a high density of vessels requires heightened vigilance, reduced speed, and strict adherence t...
- Qu'est-ce que Trafic local ? Vessels operating within a port, harbour, or defined coastal area, often with priority rules or reporting obligations fo...
- Qu'est-ce que Trafic portuaire ? Collective term for the movement of vessels and craft within port limits as monitored by VTS or Harbour Master.
- Qu'est-ce que Trainée de Flux Visqueux ? The resistance experienced by a vessel as it moves through water due to the fluid’s internal friction, affecting speed a...
- Qu'est-ce que Traitement des Résidus ? The onboard process of managing and separating oil residues, tank washings, and mixtures for discharge or retention in s...
- Qu'est-ce que Trajectoire d’Approche de la Cale ? The planned or observed vessel path when aligning for entry onto a slipway, critical for safe launching or hauling opera...
- Qu'est-ce que Transfert de contrôle de passerelle ? The formal procedure to transfer vessel control (steering and propulsion) between the bridge and alternative control sta...
- Qu'est-ce que Transfert de Fioul ? The process of pumping fuel oil from one tank to another or to the engine, requiring strict adherence to MARPOL, safety,...
- Qu'est-ce que Transfert par hélicoptère ? Operation involving the embarkation or disembarkation of personnel or cargo by helicopter to or from a vessel, requiring...
- Qu'est-ce que Trappe de secours ? A designated exit, usually watertight, providing a safe escape route from enclosed spaces in an emergency.
- Qu'est-ce que Trappe d’Ullage ? A small tank opening used for manual ullage measurements and sampling of cargo on oil and chemical tankers.
- Qu'est-ce que Tuyau de Cargaison ? A flexible hose designed for transferring liquid cargo between ship and shore, constructed and tested for strength and c...
- Qu'est-ce que Télégraphe de passerelle-moteur ? A signaling system between bridge and engine room, used to transmit engine speed and direction orders during ship maneuv...
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- Qu'est-ce que Unité de largage automatique ? A device designed to automatically release life-saving appliances, such as liferafts, when submerged or activated by spe...
- Qu'est-ce que Unité de Référence de Mouvement ? A device that detects and reports a vessel’s six degrees of motion, used to support dynamic positioning and other naviga...
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- Qu'est-ce que Vanne de Coffre de Mer ? A seacock or valve fitted at the hull sea chest, controlling seawater intake for engine cooling, ballast, or firefightin...
- Qu'est-ce que Vanne de purge ? A valve used to expel unwanted gases or residues from cargo lines, tanks, or machinery spaces, ensuring safe and inert c...
- Qu'est-ce que Vanne de reflux ? A valve installed to control the return flow of condensed vapors or liquids back into a tank or system for process or sa...
- Qu'est-ce que Vanne de Régulation de Pression ? A valve used to maintain a set pressure in a piping system by opening or closing in response to changes in upstream or d...
- Qu'est-ce que Variation du compas magnétique ? The angular difference between true north and magnetic north, affecting compass readings on board ships.
- Qu'est-ce que Veille de navigation à la passerelle ? A continuous period during which designated officers and crew maintain vigilance and operational control on the bridge t...
- Qu'est-ce que Veille d’écoute ? Continuous monitoring of a specified VHF or radio frequency for traffic, safety, or distress calls.
- Qu'est-ce que Veille à l'écoute ? Continuous monitoring of a designated VHF or MF/HF radio channel for traffic, safety, or distress messages, as required ...
- Qu'est-ce que Vent de Force Ouragan ? Wind of Beaufort scale 12 (≥ 64 kn) producing phenomenal seas; reported in Metarea bulletins as force 12.
- Qu'est-ce que Ventilation de la salle des pompes ? The process and system for providing safe airflow in the pump room to prevent accumulation of explosive vapors and maint...
- Qu'est-ce que Ventilation Salle des Machines ? The provision and regulation of air flow to the engine room to remove heat, fumes, and ensure safe working conditions, a...
- Qu'est-ce que Vibration Torsionnelle d’Arbre ? Oscillation in the propulsion shaft caused by variations in torque, potentially leading to machinery damage if not contr...
- Qu'est-ce que Vidange de cargaison ? Controlled removal of cargo residues or small remaining quantities from tanks and lines after main discharge, ensuring t...
- Qu'est-ce que Vidange de cargaison ? Removal of cargo residues or small quantities from tanks and pipelines after main discharge, ensuring tanks are as empty...
- Qu'est-ce que Viscosité de l’huile combustible ? The measure of a fuel oil’s resistance to flow, critical for engine injection and atomization; monitored and regulated i...
- Qu'est-ce que Vitesse de relevage de l’ancre ? The speed at which the anchor cable is hauled in, usually measured in meters per minute, to control anchor recovery.
- Qu'est-ce que Vitesse minimale de barre ? The lowest speed at which the vessel maintains effective steering control, typically specified by the vessel’s maneuveri...
- Qu'est-ce que Vitesse minimale de décrochage ? The lowest speed required to break the anchor free from the seabed and commence recovery.
- Qu'est-ce que Vérification de l'Inertie Arrière ? Verification manoeuvre carried out to ensure the vessel’s astern power can promptly overcome residual forward momentum b...
- Qu'est-ce que Vérification de la Ligne d'Approche ? Confirmation that vessel’s intended approach line aligns with planned track and pilot’s instructions before final manoeu...
- Qu'est-ce que Vérification de la Traction au Bollard ? Confirmation that a tug’s certified bollard-pull matches terminal requirements before allocating towage tasks.
- Qu'est-ce que Vérification de l’Adéquation du Quai ? A verification process to ensure the selected berth meets vessel requirements in terms of depth, length, fendering, and ...
- Qu'est-ce que Vérification de l’Inversion de la Vitesse ? Verification that astern power has arrested forward momentum before changing engine orders during docking sequence.
- Qu'est-ce que Vérification du Dégagement du Bossoir ? Process of ensuring the davit’s operational path is free of obstruction and ready for safe lifeboat launching or recover...
- Qu'est-ce que Vérification du Loadicator ? A procedure to verify cargo and ballast loading plans and actual weights using a shipboard stability calculator (loadica...
- Qu'est-ce que Vérifiez l'exactitude ? Instruction to verify the accuracy of a reported position, course, message, or navigational information before proceedin...
- Qu'est-ce que Vérifiez la distance ? Instruction or query to verify the distance to a navigational object, other vessel, or danger, often using radar or visu...
- Qu'est-ce que Vérifiez la position ? Instruction or request to verify the vessel's current navigational position using all available means, including GPS, ra...
Z
- Qu'est-ce que Zone dangereuse ? A specified maritime zone where navigation is hazardous due to military exercises, wrecks, shallow waters, or other dang...
- Qu'est-ce que Zone dangereuse ? A specific zone designated as hazardous to navigation due to wrecks, shoals, operations, or other maritime risks; marine...
- Qu'est-ce que Zone de Basse Pression ? A meteorological region where atmospheric pressure is lower than surrounding areas, often associated with unsettled weat...
- Qu'est-ce que Zone de Contrôle des Émissions ? Designated sea region where MARPOL Annex VI limits on SOx, NOx and PM apply; requires low-sulphur fuel or equivalent aba...
- Qu'est-ce que Zone de feu ? A designated section of a ship separated by fire-resistant boundaries to contain and limit fire spread, as defined by SO...
- Qu'est-ce que Zone de Précaution ? A defined area where vessels must navigate with particular caution, often due to traffic convergence, hazards, or comple...
- Qu'est-ce que Zone de Trafic Côtier ? A coastal area, adjacent to the landward side of a traffic separation scheme, intended for use by vessels not using the ...
- Qu'est-ce que Zone d’embarquement du pilote ? A designated area, marked on charts, where the pilot boards or disembarks from a vessel, usually at port approaches or f...
- Qu'est-ce que Zone d’Interdiction de Dépassement ? A defined sector of a channel or waterway where overtaking by vessels is prohibited for safety reasons, often due to res...
- Qu'est-ce que Zone incendie ? A designated compartment or section of a vessel, defined by structural boundaries, to limit fire spread and facilitate f...
É
- Qu'est-ce que Échange capitaine-pilote ? A formal communication process between the ship’s master and the pilot to share essential navigation information, plans,...
- Qu'est-ce que Échange de Ballast ? The procedure of replacing ballast water taken from one area with water from another, to minimize the spread of invasive...
- Qu'est-ce que Échange d’Eaux de Ballast ? Operation of replacing loaded ballast with mid-ocean water at prescribed distance from land to prevent bio-invasion, log...
- Qu'est-ce que Échantillonnage de cargaison ? Procedure for collecting representative samples of cargo for quality analysis, documentation, and regulatory compliance.
- Qu'est-ce que Échantillonnage de Fond ? The process of collecting liquid samples from the bottom of a cargo tank to check for water, contaminants, or stratifica...
- Qu'est-ce que Échantillonnage de vapeur ? Procedure to collect representative samples of vapour from tanks or lines for safety, quality, or regulatory compliance ...
- Qu'est-ce que Échantillonnage de vapeur ? Procedure to collect samples of vapour from tanks or lines for safety, quality, or regulatory compliance testing.
- Qu'est-ce que Échelle de pilote en place ? A pilot ladder correctly secured and deployed over the ship’s side, ready for safe boarding or disembarkation of the pil...
- Qu'est-ce que Éclairage de secours ? Battery-backed or independent lighting automatically activated during main power failure for safe evacuation and emergen...
- Qu'est-ce que Émetteur d'Urgence ? A dedicated radio device used to send automatic distress signals, such as EPIRBs or DSC-enabled VHF/MF/HF transmitters.
- Qu'est-ce que Émission de vapeur ? Release of vapours from cargo tanks or lines, controlled and monitored to prevent hazardous exposure, pollution, or brea...
- Qu'est-ce que Équipe de lutte contre les avaries ? A designated team trained and tasked to control flooding, fire, or structural damage during emergencies on board.
- Qu'est-ce que Équipe incendie ? A designated team trained and assigned to respond to onboard fires and operate firefighting equipment as per muster list...
- Qu'est-ce que Équipe incendie ? A team of designated crew members trained and equipped to respond immediately to fire alarms, undertake firefighting, an...
- Qu'est-ce que Équipe incendie ? A designated team of trained crew members equipped to respond immediately to fire alarms, conduct firefighting, and perf...
- Qu'est-ce que Évacuation d'urgence ? A designated route or means for crew to safely evacuate from compartments, accommodation, or machinery spaces during eme...
- Qu'est-ce que Évaluation des dommages ? A structured evaluation of damage sustained by a vessel after an incident, including extent, location, and impact on sea...
- Qu'est-ce que Évaluation du ballottement ? Evaluation of the movement and impact of liquid cargo within a tank caused by ship motion, to assess risks of structural...
- Qu'est-ce que Évaluation du Diamètre Tactique ? Assessment of the vessel’s maximum transverse distance travelled during a turning circle with constant rudder angle at f...
- Qu'est-ce que Évaluation du Pas Latéral de l’Hélice ? Evaluation of sideways movement (walk) caused by propeller rotation while making headway or sternway at low speed.
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