New Boat Design

Discussion in 'Boat Design' started by Unregistered, Jan 15, 2004.

  1. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    You can put a sealed tube from the deck to the maststep to keep the integrity of the floatation tank. The mast can be inserted in the tube.
     
  2. pkoken
    Joined: Mar 2003
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    Location: Cruising Hawaii

    pkoken S/V Samadhi V

    Is it out of the question to simply fill your bouyancy chamber(s) with closed cell foam? This would negate any worries about the mast passing through it, and should also assure that in future these areas remain empty of water.
     

  3. Tom Lathrop
    Joined: Oct 2002
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    Location: Oriental, NC

    Tom Lathrop Junior Member

    Matt,

    I have built and helped others build several cat ketches with foremast tubes that pierce the forward buoyancy tank. The method I developed which is now used by all is to mold a fiberglass tube of slightly larger diameter than the mast. The tube is sealed to the step and deck with epoxy. at the lowest point a large hole is cut through the side of the boat into the mast tube. A piece of flexible plastic tube of about 3/8 inch OD is inserted through the hole and completely encased in epoxy. After the epoxy sets, pull the tube out and chamfer the opening. Self draining and foolproof so far on many boats.

    The mast is rotated for easy striking of the sail and for storage.

    My thoughts on the other points of sailing qualities remain the same and result partly from experience with Sea Pearls and a few other well known boats of similar type. Off wind in a breeze they grow cranky and are forced to reduce sail while the more stable V bottom hard chine types simply sail away from them under full sail.

    Good judgement comes from experience. Experience comes from bad judgement. We each draw from our own experience in the conditions that we sail in and the use we put a boat to. There is room for many solutions to the equation depending on the desired outcome. These are mine and reflect my own biases. They are subject to change if more bad judgement creeps in.
     
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