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Holtrop formula

Discussion in 'Technical Discussion' started by manolis a, May 19, 2007.

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  1. manolis a, May 19, 2007
    #1
    manolis a

    manolis a New Member

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    hello everybody

    i'm interested on keel effect on stability and i have ended up in this formula considering inertia(when the roll radius of gyration is unknown)

    I = (m^1.744)/212.2035 (m^2 * kg) by Holtrop

    but this probably an empirical only equation

    Is it sound to use it on mathematical modelling?
    does it takes into account the added inertia due to the added mass?
    does anybody know a "safer" approach?

    thanxs