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Methods of Conducting Ships’ Speed Trials

Published online by Cambridge University Press:  18 January 2010

J. Th. Verstelle
Affiliation:
(Hydrographic Office, Royal Netherlands Navy)

Extract

The usual method of conducting ships’ speed trials is for the ship to make runs over a measured mile. Recently, however, sea trials have been carried out using other methods, which seem to offer certain advantages. The trials of the S.S. United States, for example, were carried out using Raydist and Decca was used in the speed trials of S.S. Manchester Spinner off the Isle of Man. This paper discusses various methods of determining the ship's speed, the diameter of the turning circle and other data normally measured during sea trials, and makes an assessment of their relative convenience and accuracy.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 1953

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References

REFERENCES

1Comstock, J. P., and Hastings, C. E. (1952). Raydist speed-measuring equipment on the S.S. United States’ sea trials. Transaction of the Society of Naval Architects and Marine Engineers, 60.Google Scholar
2Decca Navigator News, July 1952, p. 12.Google Scholar
3Fennessy, E. (1949). Hyperbolic projections. This Journal, 2, 227.Google Scholar