Trimaran, made from a Monohull

Discussion in 'Multihulls' started by brian eiland, Aug 20, 2011.

  1. brian eiland
    Joined: Jun 2002
    Posts: 4,964
    Likes: 188, Points: 73, Legacy Rep: 1903
    Location: St Augustine Fl, Thailand

    brian eiland Senior Member

    ...this was posted on

    The below creation was just featured in Norwegian sailing media. Apparently a german project named "Mia".

    The report says that the centerhull used to be a Dehler 41DS.

    Pics shot by Helge Ivers√ły at Ponta Delgada.

    I have seen lots of discussions about using a monohull as the basis for a trimaran. This is the first time I have actually seen such a creation.. It would be nice to know the full thinking behind this boat as most seem to agree that a monohull is not a good basis for a trimaran. Some of the small details like how the beams are connected also looks "interesting". What are those rectangular items at the waterline?

    Full article here for those who are fluent in scandinavian languages or Google Translate:

    Attached Files:

    1 person likes this.
  2. Corley
    Joined: Oct 2009
    Posts: 3,770
    Likes: 189, Points: 63, Legacy Rep: 826
    Location: Melbourne, Australia

    Corley epoxy coated

    The rectangular parts much have something to do with a waterstay as there is no way those beams are cantilever (look how small the inboard ends are) they must be put into compression by a stay. Overall not too bad as far as these conversions go but I'd prefer a Horstman or similar modern tri with a large interior and integrated design over this type of construction.
  3. basil
    Joined: Apr 2005
    Posts: 154
    Likes: 8, Points: 18, Legacy Rep: 55
    Location: aUSTRALIA

    basil Senior Member

    This may be a dumb question; is the keel still on this boat? I would have thought the waterline would be considerably shorter if the few tonnes of lead had been removed?
  4. brian eiland
    Joined: Jun 2002
    Posts: 4,964
    Likes: 188, Points: 73, Legacy Rep: 1903
    Location: St Augustine Fl, Thailand

    brian eiland Senior Member

    Interesting observation Basil!
  5. Ilan Voyager
    Joined: May 2004
    Posts: 1,271
    Likes: 196, Points: 63, Legacy Rep: 758
    Location: Cancun Mexico

    Ilan Voyager Senior Member

    All that work for this result...What a pity.
    Very big doubts about the strength of the system of the arms. Surely a lot of cables for keeping all that together.

  6. bruceb
    Joined: Nov 2008
    Posts: 1,249
    Likes: 44, Points: 48, Legacy Rep: 214
    Location: atlanta,ga

    bruceb Senior Member

    adjustable waterstays?

    It looks as if the waterstays are adjustable, and also there is a large platform added around the transom- as if it is built to "surf". (we know it can't plane:rolleyes:) The water line does look about stock, but it is hard to tell how much of the weight of the amas the main hull is supporting. Interesting at the very least. B
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.