On the DEEP DRILLER, among the valves to open when transferring ballast from Tank 1S to Tank 10P using the #1 ballast pump is valve __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 33 Port
Ballast system routing on the DEEP DRILLER requires exact valve lineups specified in the vessel's operations manual. Opening valve 33 Port directs suction and discharge paths correctly through the manifold to execute cross-tank ballast transfers without overpressurizing piping.
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