How much hp to plane?

Discussion in 'Boat Design' started by Preformer 40, Apr 29, 2004.

Page 2 of 2
  1. bhnautika
    Joined: Feb 2006
    Posts: 852
    Likes: 57, Points: 38, Legacy Rep: 571
    Location: australia

    bhnautika Senior Member

    Interesting, using the bhp/w ratio as coeff for different types of propulsion systems. Do you use any ceoff for the style of boat, like in the Crouch estimates?
     
    bhnautika, Mar 10, 2006
    #16
  2. RANCHI OTTO
    Joined: Apr 2005
    Posts: 1,042
    Likes: 37, Points: 0, Legacy Rep: 535
    Location: TRIESTE (ITALY)

    RANCHI OTTO Naval Architect

    all the boats are chine type and each point corresponds to a single top speed of a single boat. So doing you have the possibility to observe that the l.c.g. and other characteristics have a small influence on top speed.
    I have recorded more that 100 boats..
    I have designed a lot of boats with all 4 propulsion systems and for these I have all whole the KR vs speed curve.
    Estimating an OPC for these various propulsion systems (OPC vs speed) it is possible to evaluate a bare hull resistance curve for each boat.
     
    RANCHI OTTO, Mar 10, 2006
    #17
  3. blowhole
    Joined: Mar 2006
    Posts: 5
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    Location: Naples

    blowhole Junior Member

    Hey im glad you guys were able to use this info,sorry it took so long to get it on here.i think if more people gave info on thier boats it would help in a design phase
     
    blowhole, Mar 12, 2006
    #18
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