Question 4733 Deck General

The correct answer is D) pump from 9S. In the event of flooding in a tank, the primary countermeasure is to pump out the flooded tank to restore the vessel's stability and prevent further listing or capsizing. Pumping from the flooded tank (C3S) directly addresses the source of the flooding and is the most effective way to mitigate the situation. The other options are incorrect because counterflooding (adding water to an intact tank) would further destabilize the vessel, and pumping from other tanks (10S or 1P) would not directly address the flooding in C3S.