Small pushboat Power - Bollard Pull

Discussion in 'Boat Design' started by Satan, Jun 16, 2017.

  1. Satan
    Joined: Nov 2006
    Posts: 51
    Likes: 0, Points: 6, Legacy Rep: 10
    Location: Spain

    Satan Designer

    Hi Guys , I have a small pushboat with a Displacement full load 350 Kg so my question is there the possibility to push a barge with a similar displacement and dimensions with only 20 Hp ? What could be the procedure or formulas to check the towing speed ?
     
  2. TANSL
    Joined: Sep 2011
    Posts: 4,353
    Likes: 78, Points: 58, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    There are several methods for estimating the power needed to make advance a vessel: Morton-Getler, Guldhamer-Harvald, Holtrop-Mennen, .... Each is more or less suitable for one type of ship although, in general, they are quite good for ships with a large block coefficient, within a certain range of Froud numbers. They can give you a good enough idea of what you need.
    In this forum, in the area of spreadsheets, you can obtain the method of Holtrop-Mennen.
     
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