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Home: Categories: Education and Seamanship: Instruction and Reference: Calculators
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  • Marine Converters and Calculators
    List of marine based calculators, conversion charts and converter programs available for use. Some of these are directly related to interest in personal health and some are of indirect interest. We have written these or provided these for educational purposes and convenience.
    http://www.csgnetwork.com/marineconverters.html
    (Added: Fri Jan 10 2014) - Report this link as bad!
  • PHRF Calculator
    How Fast Is Your Boat? Calculates Approximate Average Boat Speed and Seconds per Mile Speed Differences. Assumes 10 knots True Wind Speed, a Windward/Leeward Course, optimal jibing angles, and flat water. Calculated speed is an approximation assuming normal pointing ability, etc. A high pointing boat capable of tacking through smaller angles or a boat capable of reaching lower downwind might have somewhat less boat speed for the same PHRF rating.
    http://www.pipeline.com/~wayneb/java5.htm
    (Added: Thu Jan 02 2003) - Report this link as bad!
  • The IM-S-Timator«
    Approximates IMS General Purpose Rating. It is surprisingly accurate for about 90% of the boats it has been tested with. Results are frequently within plus or minus 12 seconds a mile. Major sources of inaccuracy include lack of data for hull shape, lifting surfaces, righting moment, pitching moment, rig weight and crew weight.
    http://www.pipeline.com/~wayneb/java4.htm
    (Added: Thu Jan 02 2003) - Report this link as bad!
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