Question 2666 Deck General

The correct answer is B) At least one exhaust duct shall extend from the open atmosphere to the lower portion of the bilge. This is the correct answer because the regulations require that uninspected towing vessels using fuel with a flash point of 100°F must have adequate ventilation in the engine and fuel tank compartments. Specifically, the regulations state that there must be at least one exhaust duct that extends from the open atmosphere to the lower portion of the bilge to effectively remove any flammable vapors. The other answer choices are incorrect because they do not accurately reflect the ventilation requirements for these types of vessels. For example, option A is incorrect because the flash point threshold is 100°F, not 110°F, and options C and D do not specify the correct number and placement of the ventilation ducts.