Multihulls

Discuss multi-hull sailboat design, production and custom sailing catamarans and trimarans.

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  1. groper

    Open source 12-15m high performance/semi-cruising catamaran design

    groper, May 10, 2017 ... 20 21 22
    Replies:
    319
    Views:
    37,233
    groper
    Sep 15, 2017
  2. DennisRB

    Reverse bows on cruising cats pros and cons

    DennisRB, Mar 1, 2013 ... 11 12 13
    Replies:
    180
    Views:
    37,374
    Alik
    Apr 7, 2013
  3. LucD

    Seeking info on Tri-Star or Piver trimaran 23 to 27 Feet

    LucD, Sep 25, 2009 ... 5 6 7
    Replies:
    100
    Views:
    37,448
    FredMG
    Apr 8, 2010
  4. rapscallion

    Trimaran Design

    rapscallion, Feb 18, 2007 ... 2 3
    Replies:
    30
    Views:
    37,460
    Frankh78
    Nov 5, 2015
  5. lowe210

    Pontoon Boat Conversion to Sailboat

    lowe210, Nov 15, 2008 ... 3 4 5
    Replies:
    67
    Views:
    37,900
    silverbear
    Aug 3, 2016
  6. Corley

    Route du Rhum 2014

    Corley, Mar 1, 2013 ... 13 14 15
    Replies:
    217
    Views:
    37,983
    Corley
    Dec 24, 2014
  7. Doug Lord

    New Trimaran Foilers

    Doug Lord, Jun 8, 2016 ... 17 18 19
    Replies:
    276
    Views:
    38,073
    Vantage475T
    Apr 26, 2021
  8. Doug Lord

    Little America's Cup 2010-C CLass-the real one..

    Doug Lord, Apr 12, 2010 ... 8 9 10
    Replies:
    135
    Views:
    38,843
    Doug Lord
    Sep 28, 2010
  9. Tcubed

    Proa design

    Tcubed, Sep 13, 2008 ... 6 7 8
    Replies:
    112
    Views:
    40,334
    rob denney
    Apr 15, 2009
  10. Angélique

    float broke off... trimaran capsizes

    Angélique, Oct 4, 2009 ... 2
    Replies:
    21
    Views:
    40,420
    Angélique
    May 23, 2011
  11. Skip JayR

    The Future of Formula 40 Trimarans

    Skip JayR, Sep 8, 2015 ... 8 9 10
    Replies:
    146
    Views:
    40,509
    powerabout
    Oct 8, 2015
  12. jakobo

    tiny cruising catamaran

    jakobo, Jan 2, 2012 ... 2 3
    Replies:
    40
    Views:
    40,956
    rapscallion
    Jan 3, 2012
  13. Brorsan

    Post your design ideas

    Brorsan, Mar 11, 2011 ... 8 9 10
    Replies:
    136
    Views:
    41,418
    rob denney
    Apr 8, 2020
  14. frank smith

    dory catamaran hull

    frank smith, Feb 2, 2010 ... 6 7 8
    Replies:
    111
    Views:
    42,674
    Motivator-1
    Jun 1, 2010
  15. Doug Lord

    Gunboat G4 with UptiP Foils

    Doug Lord, May 12, 2014 ... 13 14 15
    Replies:
    215
    Views:
    43,104
    OzFred
    Oct 22, 2020
  16. Corley

    Lock Crowther 1962 Kraken 25 trimaran build and rebuild log

    Corley, Jun 7, 2011 ... 12 13 14
    Replies:
    201
    Views:
    43,431
    cavalier mk2
    Feb 1, 2017
  17. Caldera Boats

    Hobie Bravo

    Caldera Boats, Jun 1, 2006 ... 2
    Replies:
    20
    Views:
    43,638
    CT249
    Jul 17, 2018
  18. basildog

    Assymetric Cat Hulls

    basildog, Apr 8, 2009 ... 4 5 6
    Replies:
    79
    Views:
    43,795
    Ikarus342000
    Jun 10, 2015
  19. terhohalme

    How to dimension a sailing catamaran?

    terhohalme, Apr 27, 2008 ... 4 5 6
    Replies:
    82
    Views:
    43,952
    isladelobos
    Dec 5, 2014
  20. DSmith

    Wing sail for an A Class Cat

    DSmith, Dec 1, 2004 ... 2 3
    Replies:
    39
    Views:
    44,201
    petereng
    Jan 9, 2013
  21. Doug Lord

    Hydroptere-61 knots(70.15mph) Peak

    Doug Lord, Apr 1, 2011 ... 10 11 12
    Replies:
    172
    Views:
    44,607
    rcnesneg
    Apr 17, 2016
  22. valery gaulin

    Bridgedeck centreboard why don't they work???

    valery gaulin, Jan 10, 2017 ... 34 35 36
    Replies:
    532
    Views:
    45,415
    brian eiland
    Jul 27, 2019
  23. Corley

    Yvan Bougnon's circumnavigation in a beach cat project

    Corley, Jul 23, 2013 ... 16 17 18
    Replies:
    259
    Views:
    45,853
    Corley
    Aug 4, 2017
  24. P Flados

    Sailrocket 2 set to launch

    P Flados, Feb 19, 2011 ... 15 16 17
    Replies:
    242
    Views:
    45,938
    Doug Lord
    May 17, 2015
  25. Brorsan

    Scarab 16

    Brorsan, Feb 6, 2011 ... 8 9 10
    Replies:
    140
    Views:
    46,476
    Nedelin Karnolski
    Apr 1, 2020
  26. brian eiland

    Canting Keel Monos vs Multihulls

    brian eiland, Aug 31, 2006 ... 15 16 17
    Replies:
    252
    Views:
    46,854
    CT 249
    Nov 29, 2006
  27. kimosadler

    Aluminum Strongall Sailing Catamaran Plans?

    kimosadler, May 4, 2009 ... 2
    Replies:
    18
    Views:
    47,528
    adn
    Dec 14, 2011
  28. spidennis

    beach catamaran hull plans

    spidennis, Feb 8, 2012 ... 3 4 5
    Replies:
    68
    Views:
    47,595
    upchurchmr
    Apr 18, 2012
  29. CatBuilder

    Wave Piercing Bows

    CatBuilder, Apr 15, 2012 ... 12 13 14
    Replies:
    196
    Views:
    47,750
    Corley
    Feb 5, 2015
  30. eiasu

    Trimaran with accomodation in the amas

    eiasu, Nov 23, 2012 ... 15 16 17
    Replies:
    244
    Views:
    48,761
    cavalier mk2
    Jul 10, 2018
  31. pulsar

    small catamaran plans needful

    pulsar, Aug 9, 2006 ... 2
    Replies:
    22
    Views:
    49,254
    Ikarus342000
    Mar 28, 2007
  32. bluebox3000

    Build time 40ft catamaran

    bluebox3000, Jan 8, 2014 ... 10 11 12
    Replies:
    166
    Views:
    50,467
    oldsailor7
    Dec 7, 2014
  33. Bruce Woods

    cruising catamaran average speeds

    Bruce Woods, Nov 27, 2007 ... 2
    Replies:
    15
    Views:
    50,725
    souljour2000
    Jun 11, 2012
  34. rallard

    carbon fiber wing mast for my cat

    rallard, Dec 28, 2008 ... 5 6 7
    Replies:
    95
    Views:
    51,407
    rallard
    Nov 15, 2011
  35. MikeJohns

    Multihull Capsize Prevention <split>

    MikeJohns, Jun 23, 2011 ... 18 19 20
    Replies:
    294
    Views:
    51,682
    Angélique
    Jul 23, 2017
  36. nickvonw

    Round Bilge vs hard chine

    nickvonw, Apr 11, 2011 ... 6 7 8
    Replies:
    119
    Views:
    51,688
    MikeJohns
    Jan 20, 2015
  37. Doug Lord

    GC 32 super cat

    Doug Lord, Oct 15, 2012 ... 15 16 17
    Replies:
    240
    Views:
    52,172
    Doug Lord
    May 23, 2019
  38. Inquisitor

    Proa Questions: Atlantic vs Pacific

    Inquisitor, Jun 22, 2010 ... 12 13 14
    Replies:
    201
    Views:
    52,888
    Clarkey
    Sep 5, 2010
  39. Doug Lord

    Flying Phantom F 18 Catamaran

    Doug Lord, Jul 13, 2012 ... 6 7 8
    Replies:
    111
    Views:
    53,706
    Doug Lord
    Jun 4, 2019
  40. SAILFASTtigre

    design of a fast 27 catamaran

    SAILFASTtigre, Apr 18, 2005 ... 2
    Replies:
    26
    Views:
    57,046
    Pilgrim
    Jun 6, 2006
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