Deck General USCG Question #4193 (Set 134)

Where is the keel generally located on a MODU?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Along the centerline of the lower hulls

In mobile offshore drilling units (MODUs) and conventional vessels, the primary structural backbone or keel is positioned along the centerline running the full length of the lower hulls or pontoons, serving as the baseline for all vertical measurements.

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