Thames Measurement

Thames Measurement

Thames Measurement, also known as Thames Tonnage, is a system for measuring ships and boats. It was created by the 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. [ [http://www.boatus.com/goodoldboat/ratingrules.htm "Rating rules shaped our boats"] , by Ted Brewer. Retrieved May 10, 2006.]

The calculation of Thames Tonnage uses the following formula:


Thames Tonnage = frac {({length}-{beam}) imes {beam} imes frac {beam}{2 {94}

where:
*"length" is the length, in feet, from the stempost to sternpost;
*"beam" is the maximum beam, in feet.

This can be simplified as:


Thames Tonnage = frac {({length}-{beam}) imes {beam}^2} {188}

References

ee also

*Tonnage


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