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What is Dead Slow Ahead?

Dead Slow Ahead Engine telegraph order instructing propulsion at the lowest possible speed ahead, used for delicate manoeuvring or congested areas.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Dead Slow Ahead” Used in Practice?

Bridge to engine room: 'Dead slow ahead.' Maintain dead slow until clear of berth and ready to increase speed.

Certification Exam Relevance

STCWMarlins TestISF WatchkeeperGMDSS

Who Needs to Know This Term?

  • Deck Officers
  • Engine Officers
  • Masters

Related Maritime English Terms

Dead Slow AsternSlow Ahead BellHalf Ahead BellStop Main Engines

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Frequently Asked Questions

What is Dead Slow Ahead?

Engine telegraph order instructing propulsion at the lowest possible speed ahead, used for delicate manoeuvring or congested areas.

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