Question 1831 Deck General

The correct answer is D) loading marks. According to the "T-Boat" (Uninspected Passenger Vessel) regulations, the permanent marks placed on each side of a vessel forward, aft, and amidships to indicate the maximum allowable draft and trim are called loading marks. These marks are required to be clearly visible and indicate the maximum safe loading condition of the vessel. The other answer choices are incorrect because: A) the air draft refers to the vertical distance between the waterline and the highest point of the vessel, not the draft marks; B) Plimsoll marks are a different set of markings used on ocean-going vessels to indicate the maximum safe loading condition; and C) depth marks refer to markings that indicate the depth of water, not the maximum draft.