Restoring wooden sailing yacht - working order

Discussion in 'Wooden Boat Building and Restoration' started by PAD475, May 30, 2010.

  1. PAD475
    Joined: May 2010
    Posts: 4
    Likes: 1, Points: 0, Legacy Rep: 19
    Location: BELGIUM

    PAD475 New Member

    Dear all,
    I'm relatively new in the restoration of boats but have bought a wooden (mahogony) sailing yacht of 43ft as a restoration project. She seems to have a sound hull (no leakage) but a few frames are broken (and some were never fixed) and some of the planking (above the waterline) should be replaced. The biggest problem, though, seems to be the (rain)water infiltration through the deck. This caused the stringer on top of the frames to be rotten at several points. I will probably have to replace the deck, since the plywood has deteriorated. Where should I start? Removing the deck plywood, keeping the beams? Is there not a risk the boat will twist? Should I reinforce diagonally or otherwise? Can anyone give me advise? Thanks already.
     
    1 person likes this.
  2. gonzo
    Joined: Aug 2002
    Posts: 14,457
    Likes: 640, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Start by building a cradle that will maintain the shape of the boat by supporting it evenly.
     
  3. PAD475
    Joined: May 2010
    Posts: 4
    Likes: 1, Points: 0, Legacy Rep: 19
    Location: BELGIUM

    PAD475 New Member

    Thanks, she is already out of the water on a cradle, and I supported the bow and stern. Should I support her more, or will this do? Is lateral support on the planks necessary, you think?
     
  4. apex1

    apex1 Guest

    When you remove the deck you should support her lateral, yes.

    Regards
    Richard
     
  5. gonzo
    Joined: Aug 2002
    Posts: 14,457
    Likes: 640, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Make some plywood forms to keep the shape.
     
  6. PAD475
    Joined: May 2010
    Posts: 4
    Likes: 1, Points: 0, Legacy Rep: 19
    Location: BELGIUM

    PAD475 New Member

    Thanks everyone. Did I understand well. Lateral support is necessary even when I keep the beams? Shouldn't they keep the shape of the boat?
     
  7. gonzo
    Joined: Aug 2002
    Posts: 14,457
    Likes: 640, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    The deck help the boat from twisting. Think of a box without the cover.
     
  8. PAD475
    Joined: May 2010
    Posts: 4
    Likes: 1, Points: 0, Legacy Rep: 19
    Location: BELGIUM

    PAD475 New Member

    Thanks Gonzo,
    I understand.
    as for the plywood shapes, the boat being 43ft x 12 ft, this will be a lot of wood (and work). Is there no other option? I saw boats with diametric supports in the inside of the boat (against twiting) and the beams to keep the boat from opening.

    If I have to make plywood shapes (how thick should they be and how many on the 43ft of length? I suppose I will also have to interconnect them?

    Thanks for advise.
     

  9. TeddyDiver
    Joined: Dec 2007
    Posts: 2,578
    Likes: 120, Points: 73, Legacy Rep: 1650
    Location: Finland/Norway

    TeddyDiver Gollywobbler

    Some yes.. You can add internal beams below the deck beams and bolt them throw the planking (which you are replacing after the deck anyways so no harm done). Some external forms can also be made of planks and bolt them together as (multiple) triangles supported to ground and to each other. Wedges btw the forms and the the hull..
     
    1 person likes this.
Loading...
Similar Threads
  1. CarrieBishop
    Replies:
    10
    Views:
    2,609
  2. sethb
    Replies:
    4
    Views:
    7,107
  3. krashed
    Replies:
    4
    Views:
    473
  4. rocco611
    Replies:
    29
    Views:
    1,749
  5. project boat
    Replies:
    8
    Views:
    2,529
  6. Lazyfisher
    Replies:
    3
    Views:
    3,943
  7. F14CRAZY
    Replies:
    21
    Views:
    7,194
  8. ironbearmarine
    Replies:
    21
    Views:
    7,918
  9. brian_n
    Replies:
    24
    Views:
    8,496
  10. jonny2779
    Replies:
    9
    Views:
    1,241
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.