Slim Boats: trimaran IDEC

Discussion in 'Boat Design' started by Ilan Voyager, Sep 3, 2008.

  1. Ilan Voyager
    Joined: May 2004
    Posts: 1,260
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    Location: Cancun Mexico

    Ilan Voyager Senior Member

    It seems that the old recipe of long slim hulls, lightness and simplicity pays. Nigel Irens has always the magic touch...

    An example.


    The boat:

    Length Main Hull: 29.70 m 97.4 feet
    Lenth Outriggers: 24.50 m 80.3 feet
    Width : 16.50 m 54.10 feet
    Weight (real): 11 metric tons only 24230 pounds.
    Max stability torque around 110,000 kg.meter 794,714 lbs.foot

    Surface Sail winward 350 sqm 3762.50 sqf
    Surface Sail downwind 520 sqm 5590 sqf
    Mast heigth 32 metres 105 feet

    Designers Nigel Irens and Benoit Cabaret
    Calculations Herve Devaux
    Shipyard Marsaudon Composites Lorient France

    Made all carbon fiber/sandwich post cured

    Base of conception; the longest, simplest and lightest trimaran for a LONE man around the world.
    We can see that there are not bulbous bows, bustles or another tricks. Just pure flowing lines of very high prismatic hulls with a very interesting repartition of volumes. The drawing shows a very simple boat, just three hulls, 2 straight crossarms, and 2 appendices. It looks like a cheap beach trimaran.

    I guess that Nigel has taken again a good piece of wood, his hand planer and sandpaper for the first model. Yes, he works like that. After being happy with the forms sculpted in the wood, the computer is used.

    The skipper: Francis Joyon 51 years old called "titanium mental" has a long experience of multihulls. Besides he is able to stay 15 days sleeping 4 hours/day by bits of 20 minutes...That explains his ability to maintain a such speed during 57 days.

    The result:

    2008 World record sailing around the world by the three caps SOLITARY.
    57 days 13 hours 34 minutes et 6 seconds (holding always today)
    so a mean speed of 19.09 knots

    The record will be hard to break: to give an idea the world record by the maxi catamaran Orange with a full equipage is about 50 days...

    616 nautic miles (mean speed 25.66 knots) in 24 hours solitary

    Internet site unhappily only in french but a lot of pics and videos

    and admire the quality of construction and finitions.

    Training Sailing
    very interesting to see the efficient motion of the tri.

    Here we have proofs, not claims :)

    I add 2 more links:
    Multihull Geant

    It's worth to see: the 60 feet Geant running fast on good waves; a close look is interesting: the rigidity of the structure under high stresses is atonishing, the ability of the boat to pass the waves shows how the distribution of the volumes works.

    Trimarans - Lunatic Sailing

    60 feet Trimarans regattas are rather popular in France. When well situated along a high coast a regatta can draw until 20000 people. So the sponsors invest as the returns are excellent.
    These regattas are funnier than a America Cup and far less expensive. Thirty knots burst speeds are common and there are a lot of yelling when rounding the buoys.
    The popularity of fast sail in France explains how the 60 feet and maxis multihulls can be financed.

    Attached Files:

    Last edited: Sep 4, 2008
  2. Jack Daniels Eq
    Joined: Aug 2008
    Posts: 50
    Likes: 1, Points: 0, Legacy Rep: 11
    Location: Phuket

    Jack Daniels Eq Shockwave

    Has anyone even had a glimpse of these plans ??
  3. blackdaisies
    Joined: Sep 2008
    Posts: 136
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    Location: Tennessee

    blackdaisies Senior Member

    This is good for people looking for a real adventure. A long thin boat seems to better.
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