Multihulls

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

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  1. revintage

    Small trimaran with Tornado/Nacra 5.8 center hull

    revintage, Dec 25, 2021 ... 3 4 5
    Replies:
    60
    Views:
    16,602
    revintage
    Sep 9, 2023
  2. Morse

    Tornado hulls with 25 etec.. Need design help.

    Morse, Sep 14, 2011 ... 2
    Replies:
    18
    Views:
    16,557
    Corley
    Sep 27, 2011
  3. rapscallion

    Trimaran Design using a Hobie as a donor boat

    rapscallion, Feb 25, 2007
    Replies:
    12
    Views:
    16,533
    Sean Herron
    Mar 11, 2007
  4. redreuben

    Patterson 21' Trimaran Plans

    redreuben, Jan 19, 2015 ... 2 3 4
    Replies:
    51
    Views:
    16,500
    Neonhelm
    May 27, 2015
  5. Konstanty

    Tanker proa

    Konstanty, Apr 18, 2016 ... 5 6 7
    Replies:
    97
    Views:
    16,493
    gonzo
    Apr 18, 2018
  6. designz

    Catamaran Balance

    designz, Jun 19, 2012 ... 2
    Replies:
    27
    Views:
    16,491
    BigCat1950
    Nov 24, 2018
  7. bjn

    Self righting multihull?

    bjn, Feb 27, 2018 ... 5 6 7
    Replies:
    94
    Views:
    16,433
    ALL AT SEA
    Nov 3, 2023
  8. Jetboy

    Folding arm materials - Any reason not to use Aluminum?

    Jetboy, Feb 7, 2012 ... 5 6 7
    Replies:
    97
    Views:
    16,430
    gypsy28
    Jul 31, 2012
  9. hwbd

    Powered Trimaran

    hwbd, May 3, 2009
    Replies:
    9
    Views:
    16,356
    Chris Ostlind
    May 6, 2009
  10. rogerf

    Insurance - the elephant in the room.

    rogerf, Jan 31, 2013 ... 3 4 5
    Replies:
    71
    Views:
    16,323
    Alan.M
    Sep 5, 2015
  11. Sundevil

    Is it possible to build a liveaboard multi in 90 days?

    Sundevil, Oct 20, 2012 ... 2 3 4
    Replies:
    51
    Views:
    16,245
    rwatson
    Dec 26, 2012
  12. basil

    Home Built Wing Masts

    basil, Feb 25, 2015 ... 2 3 4
    Replies:
    45
    Views:
    16,245
    W17 designer
    Sep 15, 2018
  13. Qmaran

    Is rigidity a religion? Amas on the move....

    Qmaran, Aug 31, 2021 ... 3 4 5
    Replies:
    74
    Views:
    16,160
    gonzo
    Mar 28, 2022
  14. Corley

    80' trimaran for Route du Rhum to be skippered by Lionel Lemanchois

    Corley, Aug 24, 2012 ... 6 7 8
    Replies:
    110
    Views:
    16,103
    Blackburn
    Feb 15, 2014
  15. Fanie

    External Daggerboards

    Fanie, Mar 11, 2012 ... 2 3 4
    Replies:
    54
    Views:
    16,101
    upchurchmr
    Dec 15, 2015
  16. Ikenzu

    Turning Grumman Canoe into waka ama

    Ikenzu, Oct 13, 2007
    Replies:
    9
    Views:
    16,100
    Ikenzu
    Oct 13, 2007
  17. talus

    Pricing Custom Catamaran Builds - the impossible task?

    talus, Sep 13, 2008 ... 2
    Replies:
    20
    Views:
    16,075
    Scrumble
    Sep 24, 2008
  18. erikhaha

    Stitch & glue outrigger to glass inside or not?

    erikhaha, Jun 12, 2010 ... 5 6 7
    Replies:
    90
    Views:
    16,063
    apex1
    Jun 23, 2010
  19. Alex.A

    Inspiration or insanity - ontong java/hans klaar

    Alex.A, Feb 13, 2010 ... 2
    Replies:
    20
    Views:
    16,003
    rayman
    Feb 8, 2013
  20. kiwi_bob

    Trimaran lifting foil alternative

    kiwi_bob, Aug 27, 2011 ... 2 3
    Replies:
    35
    Views:
    15,984
    Doug Lord
    Aug 29, 2011
  21. Doug Lord

    Jessica Rabbit-40' Foil Equipped Trimaran

    Doug Lord, Mar 10, 2013 ... 2
    Replies:
    18
    Views:
    15,950
    Corley
    Apr 26, 2016
  22. Corley

    2 metre rc trimaran project

    Corley, Jan 18, 2013 ... 2
    Replies:
    23
    Views:
    15,932
    Konstanty
    Apr 3, 2017
  23. jmoropeza

    Newbie asking for advice

    jmoropeza, Oct 17, 2021 ... 2 3 4
    Replies:
    53
    Views:
    15,927
    jmoropeza
    Nov 7, 2021
  24. brian eiland

    America's Cup sailed with Multihulls

    brian eiland, Jun 3, 2006 ... 2 3 4
    Replies:
    48
    Views:
    15,851
    brian eiland
    Apr 5, 2008
  25. lucdekeyser

    60+' custom Harryproa cruiser "Kleen Breeze" first trials

    lucdekeyser, Aug 4, 2017 ... 2
    Replies:
    26
    Views:
    15,850
    fallguy
    May 26, 2022
  26. SteveMc

    Restoring Crowther Buccaneer 33 - Rigging Advice

    SteveMc, Feb 15, 2009 ... 2
    Replies:
    23
    Views:
    15,814
    SteveMc
    Sep 7, 2010
  27. RussellEngland

    junk rig catamaran made from plastic bottles?

    RussellEngland, Apr 23, 2011 ... 2 3
    Replies:
    42
    Views:
    15,780
    MAINSTAY
    Jun 14, 2011
  28. DrCraze

    Ferro-Cement Multihull Scantlings

    DrCraze, May 19, 2010 ... 2 3 4
    Replies:
    52
    Views:
    15,761
    tane
    Jun 20, 2016
  29. TTTP

    Designing about 4.5m long trimaran

    TTTP, Feb 17, 2008 ... 2
    Replies:
    26
    Views:
    15,737
    Chris Ostlind
    May 27, 2008
  30. brian eiland

    Nootka Dancer

    brian eiland, Apr 26, 2010 ... 2 3
    Replies:
    39
    Views:
    15,719
    bruceb
    Jan 22, 2015
  31. Doug Lord

    Small Surface Piercing Trimaran Foiler

    Doug Lord, Jan 15, 2014 ... 2 3 4
    Replies:
    49
    Views:
    15,683
    rcnesneg
    Sep 11, 2016
  32. HydroNick

    Soft Rigging Solutions

    HydroNick, Aug 17, 2013 ... 2 3 4
    Replies:
    47
    Views:
    15,660
    BobBill
    Oct 7, 2023
  33. LucD

    Information needed on Kraken 25 or other Kraken

    LucD, Oct 19, 2009 ... 2 3
    Replies:
    35
    Views:
    15,624
    Corley
    Jan 1, 2014
  34. warwick

    gybing center boards

    warwick, Jul 4, 2012 ... 5 6 7
    Replies:
    91
    Views:
    15,613
    warwick
    Jul 11, 2012
  35. Doug Lord

    Dream Flyer fl-an 18' daysailing trimaran

    Doug Lord, Mar 19, 2012 ... 2 3 4
    Replies:
    52
    Views:
    15,583
    Doug Lord
    Jun 14, 2012
  36. hashtag_laeuft

    Design of 16' foot beach catamaran

    hashtag_laeuft, Aug 15, 2017 ... 2 3 4
    Replies:
    57
    Views:
    15,539
    BobBill
    Jan 18, 2023
  37. fabrice

    thoughts on ama drag : outrigger design

    fabrice, Feb 8, 2010 ... 2
    Replies:
    19
    Views:
    15,515
    fabrice
    Feb 16, 2010
  38. paxfish

    High Speed Rudder issue....

    paxfish, Oct 12, 2015 ... 4 5 6
    Replies:
    76
    Views:
    15,500
    oldsailor7
    Nov 6, 2015
  39. guzzis3

    Beam design for a demountable catamaran

    guzzis3, Dec 21, 2016 ... 3 4 5
    Replies:
    67
    Views:
    15,496
    fallguy
    Oct 30, 2017
  40. Steve W

    outboard power on larger cruising cats

    Steve W, Aug 14, 2016 ... 4 5 6
    Replies:
    75
    Views:
    15,395
    Steve W
    Sep 14, 2016
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