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What is Under-Bridge Clearance?

Under-Bridge Clearance The vertical distance between the lowest part of the bridge span and the highest point of the vessel, ensuring safe passage.

Source: IMO SMCP, STCW Convention, SOLAS, COLREG

How is “Under-Bridge Clearance” Used in Practice?

Confirm under-bridge clearance with latest tide information and ensure vessel’s air draft allows for safe passage under bridge span.

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 Under-Bridge Clearance?

The vertical distance between the lowest part of the bridge span and the highest point of the vessel, ensuring safe passage.

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