Question 1109 Deck General

70% to pass

You are towing a 1000 gross ton gasoline tank barge. Regulations say that cargo tank hatches, ullage holes, and Butterworth plates may remain open without flame screens ONLY _______________.

A if an approved type B-II fire extinguisher is provided
B for periods not to exceed five minutes
C when the open tanks are gas free
D if the barge is towed on a hawser astern
AI Explanation

The correct answer is C) when the open tanks are gas free. The regulations for towing a gasoline tank barge state that cargo tank hatches, ullage holes, and Butterworth plates may remain open without flame screens only when the open tanks are gas free. This is because when the tanks are gas free, there is no flammable vapor present, so there is no risk of ignition from any potential spark or flame. The other options are incorrect because they do not align with the specific regulatory requirement that the tanks must be gas free in order to leave the openings uncovered.

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