In bad weather, what length of chain should be used with a single anchor?
Official USCG Answer & Rule Citation
Correct Answer: Option D — 10 times the depth of water
In adverse weather conditions, a scope of 10 times the depth of water is standard practice to maximize holding power. This increased length provides greater catenary effect, absorbing shock loads from wind and waves and ensuring the anchor remains firmly set on the seabed without dragging.
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