Hull turning - engine & gantry crane

Discussion in 'Boatbuilding' started by Wckoek, Apr 3, 2018.

  1. Wckoek
    Joined: May 2016
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    Location: Kuala Lumpur, Malaysia

    Wckoek Junior Member

    I have a 2 ton engine crane and have access to a 2.5 ton gantry crane, have anyone use such crane to turn a hull?
    On a seperate question, if both 2 and 2.5 ton crane used together, can they lift a 4 tonne boat?
     
  2. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    Are these chain fall hoists? Is the engine crane, an engine boom hoist, with a projecting or even telescoping boom? Most engine hoists will do 2 tons, but only in the fully retracted position, which may not offer enough height or reach. You'll need both to roll her over.
     
  3. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    We have turn many hulls with straps wrapped around them. You pull from one end, and the hull rolls on the straps.
     
  4. Wckoek
    Joined: May 2016
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    Location: Kuala Lumpur, Malaysia

    Wckoek Junior Member

    Yes, the gantry is chain fall hoist, the engine crane is of telescopic boom that lifts up to 2.36m according to the manual with a range of 1-1.6m.
    I am thinking of lifting the bow side with the engine hoist, and use strap on the gantry to flip her over, but I never seen such a setup being used before, and what should I look out for.
     

  5. PAR
    Joined: Nov 2003
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    Location: Eustis, FL

    PAR Yacht Designer/Builder

    I've done just what you described and just go slow, insure you can "catch her" if things get out of hand and eventually you'll find you thought and worried a lot more about this than necessary.
     
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