18ft trailerable yacht

Discussion in 'Sailboats' started by stubby, May 10, 2010.

  1. ned
    Joined: Apr 2010
    Posts: 33
    Likes: 1, Points: 0, Legacy Rep: 16
    Location: New Zealand

    ned Junior Member

    i was looking at getting an old eighteen footer and building a cabin on top and giving it a keel. for you you could use the small rig, take off the racks, and add a keel
  2. Cheesy
    Joined: Aug 2008
    Posts: 315
    Likes: 12, Points: 0, Legacy Rep: 189
    Location: NZ

    Cheesy Senior Member

    No, the small rig is still too big for that, you still need racks and or traps. The other problem is that adding a keel puts a lot of load on the rest of the boat that it wasnt designed for. I can sell you one if you want!
  3. stubby
    Joined: Jun 2009
    Posts: 55
    Likes: 1, Points: 0, Legacy Rep: 15
    Location: Australia

    stubby Junior Member

    Thats not really what I want. I want the challenge of designing the thing and if I ever have the cash maybe building one.
  4. Sail IC
    Joined: May 2009
    Posts: 4
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Sweden

    Sail IC New Member

    Evolution vs. clean sheet approach.

    I think very few even professional designs out there are a complete clean sheet design but rather an evolution of an existing design.

    Given above, here is what I would do.

    1, Do a detailed specificaion of your boat. This should include not only measurements but also what objectives your boat should fulfill, budget and material choices.

    2, Search for exisiting designs/boats that come as close as possible to your target specifications.

    3, Modify/combine the designs to get your final design closer to your target specifications.

    As an example, this is how I got about for my last boat. Objectives:

    - High performance sportsboat
    - Be able to sail and race on club level single handed up to 20 knots wind
    - Sail mostly single handed but also be able to take on a friend/child.

    There is no exisiting boat that fulfills above objectives. I didn't want to build something (different from you), so I search for existing boats which I could do as small modifications as possible. In so, I listed some target measurements on the boat.

    - Around 18 feet long
    - Easily driven hull with as small sails as possible
    - Self taking jib
    - Gennaker with a chute (aka tunnel)
    - Raced in original way with as few people as possible preferable two
    - Self righting after potential capsize

    After searching the market I found that the RS K6 came closest to above. I did following changes:

    - Fitted a trapeze to equal original RM of two people hiking.
    - Changed gennaker halyard and pole control lines to the bak of the cockpit

    The result is a boat that is faster than the original and I can race it in tight manouvers including using the gennaker in wind speeds up to 20 knots.

    Cheers and have fun

  5. goprisko
    Joined: Jun 2010
    Posts: 1
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Virgin Islands

    goprisko New Member

    Use an aluminum plate for the CB...

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.