Maritime English
Meteorology

What is Reduced Visibility Warning?

Reduced Visibility Warning A formal alert issued to vessels when fog, mist, precipitation, or other factors are expected to lower visibility below safe navigation thresholds.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Reduced Visibility Warning” Used in Practice?

All ships: Reduced visibility warning for the western approach. Sound appropriate signals and maintain a safe speed. Report any objects sighted.

Certification Exam Relevance

STCWMarlins TestISF WatchkeeperGMDSS

Who Needs to Know This Term?

  • Deck Officers
  • Engine Officers
  • Masters

Related Maritime English Terms

Frontal Passage WarningGale WarningFog Patch AdvisoryHeavy Snow Warning

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Frequently Asked Questions

What is Reduced Visibility Warning?

A formal alert issued to vessels when fog, mist, precipitation, or other factors are expected to lower visibility below safe navigation thresholds.

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