Given the same water depth and line tension, the catenary length of a 19 pound/foot wire rope mooring line in comparison to the catenary length of a 90 pound/foot mooring chain will be __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — longer
Catenary curve mechanics demonstrate that a lighter line per unit length (19 lb/ft wire rope) requires a longer horizontal span to develop the same tension and resistive upward angle at the anchor compared to a heavier line (90 lb/ft chain) under identical loads.
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