Among the valves that must be opened on the DEEP DRILLER to pump bilge water out of the port pump room using the number 1 bilge pump is valve __________.

Correct Answer: Option C — 41

Port pump room bilge evacuation on the DEEP DRILLER utilizing the number 1 bilge pump requires the opening of valve 41 to establish an unobstructed suction pathway through the designated bilge manifold.