Question 1461 Deck Safety

The correct answer is D) 24 hours. Motor-propelled lifeboats are required to have sufficient fuel to operate continuously at 6 knots for 24 hours, as per the regulations set by the US Coast Guard. This ensures that the lifeboat has enough fuel to travel a significant distance and provide adequate endurance in the event of an emergency at sea. The other answer choices are incorrect because they do not meet the 24-hour fuel requirement specified in the regulations. 6 hours would not provide enough endurance, 12 hours may be insufficient, and 18 hours would also fall short of the necessary 24-hour fuel supply.