For stronger leg support when the COASTAL DRILLER is elevated, locate a set of horizontal leg braces as near as possible to the __________.
Official USCG Answer & Rule Citation
Correct Answer: Option D — center of each lower hull guide
Jack-up rigs like the COASTAL DRILLER experience maximum bending moments on elevated legs near structural guides. Locating horizontal braces near the center of each lower hull guide maximizes leg support and structural rigidity.
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