Question 4281 Deck General

The correct answer is B) 5. When deballasting from ballast tank 2P on the DEEP DRILLER, valve 5 on the port side is the valve that must be opened. This is based on the specific configuration and plumbing of the ballast system on this particular vessel, as outlined in the operating manuals and regulations for this type of offshore drilling unit. The other answer choices are incorrect because they do not correspond to the specific valve that must be opened for deballasting from ballast tank 2P on the DEEP DRILLER. Knowing the correct valve to open is critical for safely and properly managing the ballast system on this type of vessel.