Question 4772 Deck General

The correct answer is C) 18. The explanation is as follows: 1. Confirm the correct answer: The correct answer is C) 18. 2. Explanation of the reasoning: When the starboard valve 19 fails in the closed position, the only way to deballast from tank 9S is by pumping from tank 8S. To do this, the vessel operator must open valve 18 to allow the transfer of ballast from tank 8S to the pumping system. 3. Explanation of why the other options are incorrect: A) 35 is incorrect because this valve is not involved in the deballasting process from tank 8S to tank 9S. B) 21 is incorrect because this valve is not involved in the deballasting process from tank 8S to tank 9S. D) 17 is incorrect because this valve is not involved in the deballasting process from tank 8S to tank 9S. 4. Concise summary: The correct answer is C) 18 because this valve must be opened to allow the transfer of ballast from tank 8S to the pumping system, which is necessary to deballast from tank 9S when valve 19 has failed in the closed position.