BMt and BMl

Discussion in 'Multihulls' started by ane, Sep 29, 2013.

  1. ane
    Joined: Feb 2012
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    Location: India

    ane Junior Member

    Catamaran data:
    lwl = 44.5 m
    centre to centre hull distance = 22.25 m
    disp = 316.5 m^3
    Awp = 384.19 m^2
    lcf = 19.38
    how to get BMt and BMl. what is a typical range of BMt and BMl for catamaran?
    Thanks for the reply!!
     
    ane, Sep 29, 2013
    #1
  2. Ad Hoc
    Joined: Oct 2008
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    Ad Hoc Naval Architect

    It appears you are a student. Thus have you consulted your notes or a naval architecture text book?

    BMT = I/V

    I is your waterplane inertia. You have been given the area and the distance apart. Thus you can find I. You can get V, since you know the displacement.

    You can do the same for the BML too.

    A "typical" range for a vessel of those dimensions

    BMt = 15-20m
    BML = 50-60m
     
    Ad Hoc, Sep 29, 2013
    #2
  3. ane
    Joined: Feb 2012
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    ane Junior Member

    Thanks for the reply! :)
     
    ane, Sep 30, 2013
    #3
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