ton register [ton reg] Unit Converter

Definition of ton register [ton reg] unit

A ton register is a unit of volume used chiefly for measuring a vessel’s internal capacity. It equals 100 cubic feet, or approximately 2.8317 cubic metres, and is often abbreviated RT.

History of ton register [ton reg] unit

The register ton emerged in the nineteenth century as shipping nations sought a consistent way to describe merchant vessels’ enclosed space. The name reflects an old commercial association between cargo capacity and the ton, although it measures volume rather than weight. British rules eventually standardized one register ton as 100 cubic feet, with the Moorsom System of 1854 providing a major foundation for tonnage measurement. Related terms, including gross register tonnage and net register tonnage, became common in maritime administration, taxation, and registration before newer measurement systems replaced them.

Applications of ton register [ton reg] unit

Today, the register ton is mainly encountered in historical maritime records, ship registries, archival specifications, and discussions of older vessels. It may describe a ship’s gross or net enclosed capacity, helping researchers interpret legislation, port documents, and comparative statistics. Modern shipping generally uses gross tonnage and net tonnage, dimensionless International Maritime Organization measures, rather than register tons.

Complete list of ton register [ton reg] unit conversion