Question 3012 Deck General

The correct answer is B) Forepeak ballast tank. When calculating net tonnage, the forepeak ballast tank cannot be deducted from the gross tonnage. This is because the forepeak ballast tank is considered an integral part of the ship's hull and contributes to the overall size and displacement of the vessel. In contrast, spaces like the chain locker, crew mess room, and master's cabin can be deducted from the gross tonnage to arrive at the net tonnage, as they are not considered part of the ship's hull. The regulations governing the calculation of net tonnage, as outlined in the International Convention on Tonnage Measurement of Ships, specify that the forepeak ballast tank must be included in the overall measurement of the vessel's tonnage.