Maritime English
External Communication

What is Channel Sixteen?

Channel Sixteen The international VHF radio distress, safety, and calling channel (156.8 MHz) monitored at all times by ships and shore stations.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Channel Sixteen” Used in Practice?

All vessels must maintain a listening watch on channel sixteen at all times for distress, safety, or urgent messages.

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 Channel Sixteen?

The international VHF radio distress, safety, and calling channel (156.8 MHz) monitored at all times by ships and shore stations.

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