Question 1885 Deck Safety

The correct answer is D) tank top. The "inner bottom" refers to the tank top, which is the structural deck that forms the top of the double bottom of a vessel. The tank top separates the double bottom compartments from the cargo or other spaces above it. This is the definition of the "inner bottom" based on the regulations and terminology used in the US Coast Guard Captain's License Examinations. The other options are incorrect because they do not accurately describe the "inner bottom" of a vessel. Option A refers to the space between frames, option B describes the inner side of the hull, and option C is the compartment between the tank top and shell, which is not the tank top itself.