A mobile offshore drilling unit will show the day-shape shown in illustration D010RR below to indicate which of the following?
Official USCG Answer & Rule Citation
Correct Answer: Option A — being towed
Under the International Regulations for Preventing Collisions at Sea (COLREGS), Rule 30 and Annex I/standard MODU towing configurations, a diamond shape or specific black shape indicates a mobile offshore drilling unit under tow.
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