Question 2693 Deck General

The correct answer is D) be fitted with a positive fuel shut-off valve located at the tank. This is the correct answer because the fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to have a positive fuel shut-off valve located at the tank. This valve allows the fuel supply to be quickly and easily shut off in the event of a fire or other emergency. The other options are incorrect because they do not fully address the requirement for a positive fuel shut-off valve at the tank. Option A does not specify the location of the shut-off valve, option B describes a drain cock rather than a shut-off valve, and option C refers to a gate valve in the space where the tank is located, rather than at the tank itself.