Bruttoregistertonnen

Bruttoregistertonnen, often abbreviated as GRT, is a unit of volume measurement used in shipping. It represents the total enclosed volume of a ship's hull and superstructures, expressed in units of 100 cubic feet. This measurement is not a weight but rather a capacity, indicating the space available for cargo, passengers, and machinery. GRT is calculated based on a ship's dimensions and is a standardized way to compare the size of different vessels. It is distinct from deadweight tonnage (DWT), which measures the maximum weight a ship can carry, and net register tonnage (NRT), which represents the volume of space used for cargo. GRT is used for various purposes, including determining port fees, manning requirements, and insurance premiums. The concept has largely been superseded by Gross Tonnage (GT) under the International Convention on Tonnage Measurement of Ships, 1969, which provides a more accurate and consistent measure of a ship's internal volume. However, GRT may still be encountered in older regulations or historical contexts.