Deck General USCG Question #3433 (Set 109)

The COASTAL DRILLER is experiencing a single amplitude roll angle of 3 degrees and a roll period of 10 seconds. What is the maximum water depth that can be used for going on location?

Official USCG Answer & Rule Citation

Correct Answer: Option B — 95 feet

Calculations derived from MODU operating manuals and wave-induced motion criteria limit maximum water depths based on dynamic stability and response periods. For the specified roll parameters, 95 feet represents the operational threshold to prevent excessive amplification and structural leg stress.

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