Multihulls

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

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  1. mikereed100

    Adding vee to cat hulls

    mikereed100, May 22, 2011 ... 4 5 6
    Replies:
    77
    Views:
    9,086
    mikereed100
    Jun 27, 2011
  2. Mark O Hara

    Changing Catamaran Beams from Wood to Composite.

    Mark O Hara, Aug 4, 2020 ... 4 5 6
    Replies:
    78
    Views:
    4,613
    brian eiland
    Aug 28, 2020
  3. Corley

    Kurt Hughes updated Trikala 19 trimaran

    Corley, Jan 28, 2013 ... 4 5 6
    Replies:
    78
    Views:
    22,982
    W17 designer
    Mar 29, 2014
  4. Tom Makes Things

    Non-foiling trimarans under 20'

    Tom Makes Things, Sep 25, 2019 ... 4 5 6
    Replies:
    79
    Views:
    6,889
    kleppar
    Jun 10, 2021 at 5:43 AM
  5. Corley

    New range of Tony Grainger Trimarans

    Corley, Jul 28, 2012 ... 4 5 6
    Replies:
    79
    Views:
    22,508
    Corley
    Aug 19, 2016
  6. basildog

    Assymetric Cat Hulls

    basildog, Apr 8, 2009 ... 4 5 6
    Replies:
    79
    Views:
    43,790
    Ikarus342000
    Jun 10, 2015
  7. Doug Lord

    Movable Ballast for Small Multihulls / Self-Righting?

    Doug Lord, Nov 27, 2010 ... 4 5 6
    Replies:
    79
    Views:
    15,325
    Doug Lord
    Dec 22, 2010
  8. Corley

    Transat Jacques Vabre 2013, MOD70 & Multi50

    Corley, Sep 17, 2013 ... 4 5 6
    Replies:
    80
    Views:
    7,770
    Corley
    Dec 2, 2013
  9. Corley

    Ted Warren new Ultralight 20 trimaran

    Corley, Aug 29, 2012 ... 4 5 6
    Replies:
    81
    Views:
    19,781
    Doug Lord
    Jul 26, 2016
  10. Gus7119

    A Frame Masts

    Gus7119, Jan 20, 2016 ... 4 5 6
    Replies:
    81
    Views:
    11,482
    Steveso
    Feb 18, 2016
  11. DennisRB

    l'hydroptere.ch

    DennisRB, Oct 11, 2010 ... 4 5 6
    Replies:
    81
    Views:
    17,925
    Doug Lord
    Sep 4, 2014
  12. rayaldridge

    Small trailerable cruising cats... biggest flaw?

    rayaldridge, Nov 18, 2010 ... 4 5 6
    Replies:
    81
    Views:
    35,087
    rayaldridge
    Jul 25, 2011
  13. Fanie

    Hull Shape as Keel

    Fanie, May 27, 2008 ... 4 5 6
    Replies:
    81
    Views:
    12,933
    Fanie
    Jun 15, 2008
  14. terhohalme

    How to dimension a sailing catamaran?

    terhohalme, Apr 27, 2008 ... 4 5 6
    Replies:
    82
    Views:
    43,944
    isladelobos
    Dec 5, 2014
  15. bruceb

    Light floats

    bruceb, Dec 2, 2012 ... 4 5 6
    Replies:
    82
    Views:
    10,142
    bruceb
    Jan 15, 2013
  16. Alex.A

    Proa Hulls

    Alex.A, May 21, 2010 ... 4 5 6
    Replies:
    83
    Views:
    16,521
    Alex.A
    Jul 8, 2010
  17. caiman

    Foil Ratio

    caiman, Dec 26, 2010 ... 4 5 6
    Replies:
    84
    Views:
    11,706
    caiman
    Jul 31, 2011
  18. cutawaycafe

    Biplane rigs

    cutawaycafe, May 15, 2013 ... 4 5 6
    Replies:
    85
    Views:
    28,656
    brian eiland
    Jul 8, 2020
  19. Doug Lord

    Everglades Challenge: the Right Boat?

    Doug Lord, Mar 5, 2016 ... 4 5 6
    Replies:
    85
    Views:
    14,816
    Doug Lord
    Apr 5, 2016
  20. bearflag

    Chris White Atlantic 47, MastFoil

    bearflag, Nov 21, 2011 ... 4 5 6
    Replies:
    86
    Views:
    30,022
    Nico Crispi
    Jul 30, 2017
  21. simon

    Quick building strategies

    simon, Oct 17, 2007 ... 4 5 6
    Replies:
    86
    Views:
    23,431
    doug kay
    Dec 3, 2007
  22. motorcat

    New sail TNT 34

    motorcat, Feb 25, 2010 ... 4 5 6
    Replies:
    87
    Views:
    31,706
    champ0815
    Jan 6, 2013
  23. Maciek188

    Catamaran vs Trimaran

    Maciek188, Jul 17, 2005 ... 4 5 6
    Replies:
    88
    Views:
    73,566
    oscarvan
    May 31, 2009
  24. ondarvr

    Some good deals on multi hulls

    ondarvr, Sep 7, 2017 ... 4 5 6
    Replies:
    89
    Views:
    7,555
    groper
    Oct 14, 2017
  25. Corley

    Team Australia set to depart on Sydney to Auckland record attempt

    Corley, Oct 15, 2013 ... 4 5 6
    Replies:
    89
    Views:
    9,563
    Corley
    Oct 27, 2014
  26. RHough

    Multi speed/length relationship?

    RHough, May 17, 2008 ... 4 5 6
    Replies:
    89
    Views:
    21,340
    Erwan
    Aug 2, 2008
  27. yoram

    need help in building a small catamaran

    yoram, Nov 18, 2010 ... 5 6 7
    Replies:
    90
    Views:
    78,259
    dstgean
    Dec 2, 2010
  28. erikhaha

    Stitch & glue outrigger to glass inside or not?

    erikhaha, Jun 12, 2010 ... 5 6 7
    Replies:
    90
    Views:
    12,819
    apex1
    Jun 23, 2010
  29. catsketcher

    Good reasons NOT to design

    catsketcher, Aug 9, 2006 ... 5 6 7
    Replies:
    90
    Views:
    16,586
    Richard Atkin
    Jan 25, 2008
  30. CatBuilder

    Single Dagger Board vs Double Boards

    CatBuilder, Apr 26, 2011 ... 5 6 7
    Replies:
    91
    Views:
    17,722
    DennisRB
    May 31, 2021
  31. warwick

    gybing center boards

    warwick, Jul 4, 2012 ... 5 6 7
    Replies:
    91
    Views:
    11,370
    warwick
    Jul 11, 2012
  32. wannabeboater

    fast cats

    wannabeboater, Jul 14, 2009 ... 5 6 7
    Replies:
    91
    Views:
    11,514
    wannabeboater
    Jul 21, 2009
  33. groper

    Catamaran composite beam design

    groper, Apr 29, 2012 ... 5 6 7
    Replies:
    92
    Views:
    22,821
    rxcomposite
    May 4, 2012
  34. rayaldridge

    Little Catamarans Vs. Little Trimarans for Beachcamping

    rayaldridge, Aug 17, 2008 ... 5 6 7
    Replies:
    92
    Views:
    76,029
    Skywoolf
    Jul 15, 2010
  35. Gary Baigent

    single handing 100 foot multihulls

    Gary Baigent, Oct 31, 2010 ... 5 6 7
    Replies:
    93
    Views:
    10,178
    monocat
    Nov 18, 2010
  36. mihari

    28' sail cat

    mihari, Sep 4, 2009 ... 5 6 7
    Replies:
    93
    Views:
    24,426
    Elmo
    Dec 23, 2009
  37. rallard

    carbon fiber wing mast for my cat

    rallard, Dec 28, 2008 ... 5 6 7
    Replies:
    95
    Views:
    51,388
    rallard
    Nov 15, 2011
  38. Jerry_Lincoln

    Norman Cross Trimaran

    Jerry_Lincoln, Mar 26, 2005 ... 5 6 7
    Replies:
    96
    Views:
    89,821
    upchurchmr
    May 7, 2021
  39. trip the light fandango

    building new amas/floats from recycled beachcat hulls

    trip the light fandango, Apr 23, 2019 ... 5 6 7
    Replies:
    96
    Views:
    8,534
    trip the light fandango
    Jan 29, 2021
  40. Doug Lord

    18' Trimaran vs F18 Catamaran

    Doug Lord, Jun 13, 2010 ... 5 6 7
    Replies:
    96
    Views:
    36,104
    Doug Lord
    Nov 17, 2010
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