Maritime English
Engineering

What is Shaft Revolution Counter?

Shaft Revolution Counter A device or system that records the number of revolutions of the propulsion shaft, providing critical speed and distance data.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Shaft Revolution Counter” Used in Practice?

Verify shaft revolution counter readings every hour and log them to confirm accurate propulsion data.

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 Shaft Revolution Counter?

A device or system that records the number of revolutions of the propulsion shaft, providing critical speed and distance data.

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