Question 1539 Deck General

The correct answer is D) 125%. According to the regulations for tanker vessels, the inert gas generating system must have a capacity that is at least 125% of the maximum total capacity of all the cargo pumps that can be operated simultaneously. This ensures that the inert gas system can effectively replace the oxygen in the cargo tanks, creating an inert atmosphere to prevent the risk of explosions or fires. The other options are incorrect because they do not meet the 125% requirement specified in the regulations. A capacity of 50%, 75%, or 100% would not provide the necessary margin of safety and redundancy required for the inert gas system on a tanker vessel.