Question 1465 Deck Safety

70% to pass

Winch drums for lifeboat falls shall have a diameter at the base of the groove equal to at least _______________.

A 6 times the diameter of the wire rope
B 8 times the diameter of the wire rope
C 12 times the diameter of the wire rope
D 16 times the diameter of the wire rope
AI Explanation

The correct answer is D) 16 times the diameter of the wire rope. The regulation that specifies this requirement is found in 46 CFR 160.015-5(d), which states that the winch drum diameter for lifeboat falls shall be at least 16 times the diameter of the wire rope used. This is to ensure that the wire rope can wrap smoothly and evenly on the drum without excessive bending or wear. The other options are incorrect because they do not meet the minimum regulatory requirement of 16 times the wire rope diameter. A diameter of 6, 8, or 12 times the wire rope diameter would not provide sufficient support and protection for the wire rope, leading to potential issues with the lifeboat launching system.

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Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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