Question 3344 Deck General

The correct answer is B) regular checks of bilge levels. Totally enclosed survival craft that have been afloat for a long period require regular checks of bilge levels to ensure proper drainage and prevent the accumulation of water. This is necessary to maintain the buoyancy and stability of the craft, which is crucial for its intended purpose of providing a safe refuge in an emergency situation at sea. The other answer choices are incorrect because: A) flushing the water spray system is not necessary for the long-term operation of the survival craft, C) opening hatches would compromise the enclosed nature of the craft, and D) ear plugs are not required for the operation of the survival craft.