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What is Check Range?

Check Range Instruction or query to verify the distance to a navigational object, other vessel, or danger, often using radar or visual bearings.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Check Range” Used in Practice?

Bridge, check range to the nearest vessel off port bow and advise if risk of collision exists.

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 Check Range?

Instruction or query to verify the distance to a navigational object, other vessel, or danger, often using radar or visual bearings.

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