Question 65 GLI03 - Master-LT 500-1600 GRT

The Correct Answer is A **Why Option A is Correct:** Gross Tonnage (GT) is a measure representing the total volume of all enclosed spaces within a ship, calculated according to international formulas (specifically the IMO's International Convention on Tonnage Measurement of Ships, 1969 - Tonnage 69). Net Tonnage (NT) is derived from the Gross Tonnage by subtracting spaces that are not generally used for the carriage of cargo or passengers, such as navigation areas, crew accommodation, machinery spaces (though the deduction rules are complex and standardized). Therefore, **Net tonnage is the gross tonnage less certain deductible spaces**, which usually results in a figure representing the volume available for commercial use. **Why Other Options Are Incorrect:** * **B) Net tonnage is tonnage of cargo compared to tonnage of whole ship.** This is incorrect. Both Gross and Net Tonnage are measures of volume (not weight) and relate to the ship's structure. Tonnage of cargo is distinct from Net Tonnage, although Net Tonnage is an indicator of the ship's capacity to carry cargo. * **C) Net tonnage is gross tonnage minus engine and bunker spaces.** This is partially true in concept (engine spaces are deducted), but the calculation for NT is highly standardized and involves subtracting many other specific spaces besides just engine and bunker areas (e.g., specific ballast tanks, certain accommodation spaces, etc.). Furthermore, the deduction is not a simple subtraction; the Tonnage 69 formula is complex and relates NT to the molded volume of the cargo spaces. While engine space deduction is a historical concept, Option A provides the most accurate and general definition. * **D) Net tonnage is the net weight of the ship.** This is fundamentally incorrect. Tonnage, in the context of shipping measurements (Gross and Net Tonnage), is a measurement of **volume** (100 cubic feet historically, or standardized cubic meters under Tonnage 69), not weight. The weight of the ship is referred to by displacement or deadweight.