Question 1904 Deck Safety

The correct answer is B) the outboard strake of plating on each side of an inner bottom. The "margin plate" refers to the outboard strake of plating that runs along the sides of a vessel's inner bottom. This plate helps to reinforce the structure and provide additional support to the vessel's hull. This is a common term used in the construction and design of ships, which is an important topic covered in the US Coast Guard Captain's License Examinations. The other options are incorrect because they do not accurately describe the definition of a "margin plate." Option A refers to the outer strake of plating on the main deck, option C refers to the uppermost strake of plating on the shell, and option D refers to the plate on top of the keel, none of which are the correct definition of a "margin plate."