Question 1942 Deck General

The correct answer is B) Shut-off valve. A shut-off valve is required in the fuel supply line at the engine as per the regulations for Coast Guard Captain's License Examinations. This valve allows the engine fuel supply to be quickly and easily shut off in case of an emergency, such as a fuel leak or fire, to help prevent the spread of the hazard. The other answer choices are not required in the fuel supply line at the engine. A flow meter measures fuel flow, a filter removes contaminants, and a pressure gauge monitors fuel pressure, but these devices are not mandated like the shut-off valve.