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From Wikipedia, the free encyclopedia
Thames Measurement, also known as Thames Tonnage, is a system for measuring ships and boats. It was created in 1855 as a variation of Builder's Old Measurement by the Royal Thames Yacht Club, and was designed for small vessels, such as yachts. It was originally used for calculating the port dues for yachts; the formula was also used in some early handicapping systems for yacht racing.[1]
The calculation of Thames Tonnage uses the following formula:
where:
This can be simplified as:
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