rudder blade

Discussion in 'Boat Design' started by Scofield, Mar 31, 2008.

  1. Scofield
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    Scofield Junior Member

    I need a prediction method or something similar for rudder blade area prediction for motoryachts.
    I am working on 21m motoryacht and i have to design a rudder for the boat.
    I do not know a prediction method for the rudder blade area and rudders form.
    If anyone has advice a resource about this subject, i will be happy.
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    FAST FRED Senior Member

    Go to the Professional Boat Builder site, and find an article in their free archives.

  3. Olav
    Joined: Dec 2003
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    Olav naval architect

    The aforementioned article in Professional Boatbuilder (written by Eric W. Sponberg iirc) is a really good source to get an idea about rudder design and engineering.

    If you want to go simply straightforward I recommend to use the GL Rules and Guidelines which can be found here. Have a look at Part 3 (Special Craft) / Chapter 3 (Yachts and Boats up to 24m) / Section 1 (Hull Structures) for rudder sizing and scantlings. Other Classification Societies may have something similar but GL is what I'm familiar with.
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