Catamaran hull alignment

Discussion in 'Multihulls' started by rturbett, Nov 20, 2022.

  1. rturbett
    Joined: Aug 2005
    Posts: 193
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    Location: FINGER LAKES, NY

    rturbett Senior Member

    What is everyone's favorite way to ensure hulls are perfectly aligned when dropping the beams in place?

    Looking for any simple tricks or techniques- mine is a combination of a rigid guide to fit into the daggerboard slots, and plumb lines to ensure vertical. I have tried using a laser level, with some success.

  2. ThomD
    Joined: Mar 2009
    Posts: 561
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    Location: TO

    ThomD Senior Member

    Water level, tape measure. And the rest was just the shears being on a plane Then check the bows. If the thing is built without twist, or whatever, the shears should work. But the only cat I built was a 16 foot power boat. :)

    Important to look at it. If it looks good, the builder should have a better eye than passers by. There was this nice house on our road, that had a fancy carport with a chandelier type light. It was totally obvious that the plumb of the light indicated the whole house was on a slope. Whether that was really the case would be hard to tell without a plumb bob, to check. But things should pass the passer by test. But presumably we are way past that in this case.
  3. fallguy
    Joined: Dec 2016
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    Location: usa

    fallguy Senior Member

    Laser level, tape measures, lotsa checks.

    Mark the waterline, then you have multiple places to check hull to hull..
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