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- Apprentice Mate Steersman (Western Rivers (Any Appropriate Tonnage)) »
- Q423 - Deck General
31. Which fitting is a closed chock
Choice D is correct; a closed chock is a fitting with a fully enclosed opening designed to lead a mooring line through a bulwark, preventing the line from jumping out under strain. This distinguishes it from bollards, cleats, and warping heads, which are used for securing lines, and confirms its identification based on standard USCG illustrations.
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