Maritime English
Meteorology

What is Sea Fog Warning?

Sea Fog Warning Notice that horizontal visibility at sea will fall below one kilometre due to advection or radiation fog.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Sea Fog Warning” Used in Practice?

Shanghai MSA issues sea fog warning valid for approaches to Changjiang Kou from 0000-0600 LT; visibility expected less than five cables.

Certification Exam Relevance

STCWMarlins TestISF WatchkeeperGMDSS

Who Needs to Know This Term?

  • Deck Officers
  • Engine Officers
  • Masters

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Frequently Asked Questions

What is Sea Fog Warning?

Notice that horizontal visibility at sea will fall below one kilometre due to advection or radiation fog.

Where can I learn this term for free?

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