Strake design for racing boat

Discussion in 'Powerboats' started by Lancer, Feb 28, 2004.

  1. Lancer
    Joined: Feb 2004
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    Location: 99 Central Park Drive New zealand

    Lancer New Member

    Can someone direct me to design theories and research on how to design planning strakes.
    The boat will be LOA11m BOA2.7 23 degree 6.5 tonne
     
  2. Willallison
    Joined: Oct 2001
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    Location: Australia

    Willallison Senior Member

    Not sure about the info you're after, but 6.5 tonne seems kinda heavy for an 11m race boat to me.... :?:
     
  3. Lancer
    Joined: Feb 2004
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    Location: 99 Central Park Drive New zealand

    Lancer New Member

    Willallison
    Yes we are quite heavy but it has specialised application. 1000kg personnel and equipment, 900 L fuel, to International Classification for 40 kts at sea state 4. Performance prediction shows excellent performance despite appearance of high load. 20kts 2300rpm, 30-2420rpm, 40-2740rpm, 45-2900, powered by twin 500 hp diesel onto jet.

    There will be a central Ski Strake starting at 50 mm wide at the bow, to enable a protective plate to be attached to the keel. My present thought is to allow this to widen so that it is 125 at transom. However the 50 mm plate aluminium would run the full length.

    It is the science behind the other strakes that I am inteerested in.
    Ronald
     

  4. CDBarry
    Joined: Nov 2002
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    Location: Maryland

    CDBarry Senior Member

    There was a paper on strakes given at the Chesapeake section of SNAME a couple of years ago.
     
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