Maritime English
External Communication

What is Change Channel?

Change Channel Instruction to switch VHF radio communications from one designated channel to another for operational or traffic management reasons.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Change Channel” Used in Practice?

Pilot Boat Delta, this is Port Control: change channel to 12 for traffic updates and confirm on new frequency.

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 Change Channel?

Instruction to switch VHF radio communications from one designated channel to another for operational or traffic management reasons.

Where can I learn this term for free?

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