Multihulls

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

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  1. Doug Lord

    Lifting Foil on Trimaran Daggerboard- Martin vs Maserati

    Doug Lord, Apr 3, 2017
    Replies:
    8
    Views:
    5,256
    Doug Lord
    Jan 20, 2019
  2. Dolfiman

    Banque Populaire IX - Ultim 32m Trimaran foiler

    Dolfiman, Oct 16, 2017 ... 2 3
    Replies:
    43
    Views:
    14,273
    Doug Lord
    Jan 22, 2019
  3. Doug Lord

    Banque Populaire XI- New ULTIM for 2020-21 by VPLP

    Doug Lord, Jan 22, 2019
    Replies:
    2
    Views:
    3,193
    Doug Lord
    Jan 22, 2019
  4. member 63369

    Wharram trimaran

    member 63369, Jan 21, 2019 ... 2
    Replies:
    25
    Views:
    9,712
    Angélique
    Jan 23, 2019
  5. MichaelRoberts

    Wing mast prebend

    MichaelRoberts, Jan 15, 2019
    Replies:
    8
    Views:
    4,373
    Erwan
    Jan 24, 2019
  6. Doug Lord

    Martin Fischer-Catamaran Daggerboard position: foiler and convertible--

    Doug Lord, Jan 24, 2019
    Replies:
    0
    Views:
    2,696
    Doug Lord
    Jan 24, 2019
  7. Libertist

    New 850 tri by Erik Lerouge

    Libertist, May 26, 2017
    Replies:
    14
    Views:
    5,937
    Libertist
    Jan 26, 2019
  8. MickH

    Unraveling the origin mysteries of my cat

    MickH, Feb 1, 2019
    Replies:
    3
    Views:
    2,473
    Angélique
    Feb 5, 2019
  9. soulofasailor

    Reynolds 21 News

    soulofasailor, Aug 26, 2018
    Replies:
    1
    Views:
    2,620
    Clent Trammell
    Feb 8, 2019
  10. Doug Halsey

    Onboard Video - Hydrofoil Trimaran Broomstick

    Doug Halsey, Dec 28, 2011 ... 2
    Replies:
    25
    Views:
    10,646
    alan craig
    Feb 11, 2019
  11. Kentaro

    Plans for an OC1 or Va'a outrigger canoe

    Kentaro, Mar 18, 2016
    Replies:
    1
    Views:
    5,446
    geronimo2168
    Feb 11, 2019
  12. garypotgieter

    40' cat build

    garypotgieter, Feb 10, 2019 ... 2
    Replies:
    17
    Views:
    9,168
    Angélique
    Feb 14, 2019
  13. Doug Lord

    The Untold Story of Waka or How TNZ Changed the World

    Doug Lord, Feb 14, 2019
    Replies:
    1
    Views:
    2,396
    Doug Lord
    Feb 14, 2019
  14. Dolfiman

    Ultims in Transat Jacques Vabre

    Dolfiman, Oct 29, 2017 ... 3 4 5
    Replies:
    66
    Views:
    10,752
    Dolfiman
    Feb 16, 2019
  15. Doug Lord

    Argo capsizes in training for the RORC 600-crew ok

    Doug Lord, Feb 16, 2019
    Replies:
    2
    Views:
    2,620
    Doug Lord
    Feb 16, 2019
  16. ElGringo

    Hypothetical Question - can the point where wakes cross between hulls be moved by hull shape?

    ElGringo, Feb 12, 2019 ... 2 3
    Replies:
    33
    Views:
    7,329
    Ad Hoc
    Feb 21, 2019
  17. Doug Lord

    Stunning Fleet for RORC Caribbean 600 Feb 18,2019

    Doug Lord, Dec 21, 2018 ... 2
    Replies:
    23
    Views:
    3,966
    Doug Lord
    Feb 22, 2019
  18. Doug Lord

    Curved Lifting Foils on Cruising Cats??

    Doug Lord, Sep 4, 2011 ... 2 3
    Replies:
    34
    Views:
    9,814
    Angélique
    Feb 25, 2019
  19. Chotu

    Partially Complete Catamaran Need COI Help

    Chotu, Feb 26, 2019
    Replies:
    1
    Views:
    2,772
    fallguy
    Feb 26, 2019
  20. Briandesi

    Searching for a previous project.

    Briandesi, Mar 2, 2019
    Replies:
    3
    Views:
    2,206
    Mr Efficiency
    Mar 2, 2019
  21. Gianf1041

    finding the centre of effort....help

    Gianf1041, Feb 26, 2019
    Replies:
    6
    Views:
    3,292
    Gianf1041
    Mar 4, 2019
  22. Doug Lord

    Foils for Cruising and/or Cruiser/Racer Trimarans?

    Doug Lord, Feb 26, 2019
    Replies:
    5
    Views:
    4,963
    Doug Lord
    Mar 8, 2019
  23. Doug Lord

    Sail GP: Boat Speed vs True Wind Speed

    Doug Lord, Feb 21, 2019
    Replies:
    6
    Views:
    6,057
    bjn
    Mar 10, 2019
  24. markstrimaran

    UV proof synthetic standing rigging for mast stays.

    markstrimaran, Mar 1, 2019 ... 2 3
    Replies:
    42
    Views:
    8,802
    trip the light fandango
    Mar 12, 2019
  25. magentawave

    What is the beam of a Crowther Spindrift 37?

    magentawave, Mar 11, 2019
    Replies:
    4
    Views:
    4,227
    magentawave
    Mar 13, 2019
  26. Seafarer24

    Custom Cross Trimaran

    Seafarer24, Mar 15, 2019
    Replies:
    0
    Views:
    2,954
    Seafarer24
    Mar 15, 2019
  27. garypotgieter

    Can this catamaran be saved?

    garypotgieter, Feb 18, 2019
    Replies:
    10
    Views:
    3,208
    TI TI
    Mar 19, 2019
  28. SuenosAzules

    A Blog About Living Aboard a 1975 46' Norman Cross Trimaran

    SuenosAzules, Aug 17, 2015
    Replies:
    1
    Views:
    4,170
    JamesG123
    Mar 20, 2019
  29. Doug Lord

    SuperFoiler 2018-2019 Season

    Doug Lord, Nov 24, 2018 ... 2
    Replies:
    18
    Views:
    5,585
    Doug Lord
    Mar 29, 2019
  30. Doug Lord

    Great Multihull Video

    Doug Lord, Jan 26, 2010 ... 17 18 19
    Replies:
    270
    Views:
    87,284
    Doug Lord
    Mar 29, 2019
  31. dsigned

    34 ft asymmetrical catamaran/tacking outrigger/cataproa

    dsigned, Feb 27, 2019 ... 2 3 4
    Replies:
    46
    Views:
    17,413
    Enter Miles
    Mar 31, 2019
  32. GaryJones

    Clarity wanted: heavy vs light

    GaryJones, Mar 22, 2019 ... 2 3 4
    Replies:
    46
    Views:
    9,850
    Ad Hoc
    Apr 4, 2019
  33. Doug Lord

    DSS for "Foil Assist" on Multihulls?

    Doug Lord, Dec 18, 2008
    Replies:
    13
    Views:
    7,595
    Doug Lord
    Apr 4, 2019
  34. Doug Lord

    Ultims Brest Oceans Race

    Doug Lord, Dec 12, 2018
    Replies:
    3
    Views:
    3,065
    Doug Lord
    Apr 5, 2019
  35. Jethrow

    Drilling hole in rudder blades

    Jethrow, Apr 4, 2019
    Replies:
    4
    Views:
    2,515
    JamesG123
    Apr 5, 2019
  36. rapscallion

    Ama designs that create lift

    rapscallion, Nov 18, 2007 ... 2 3
    Replies:
    30
    Views:
    9,342
    CT 249
    Apr 7, 2019
  37. Charlyipad

    Welded aluminum tangs on multihulls

    Charlyipad, Apr 10, 2019
    Replies:
    1
    Views:
    3,037
    luff tension
    Apr 11, 2019
  38. Gianf1041

    daggerboat area

    Gianf1041, Apr 18, 2019
    Replies:
    8
    Views:
    2,338
    bruceb
    Apr 19, 2019
  39. Corley

    Spindrift team Jules Verne Trophy record attempt

    Corley, Jan 15, 2019 ... 2 3 4
    Replies:
    52
    Views:
    7,736
    Doug Lord
    Apr 25, 2019
  40. Doug Lord

    Dynamic lift(downforce): Cat vs Tri-

    Doug Lord, May 1, 2019
    Replies:
    0
    Views:
    2,125
    Doug Lord
    May 1, 2019
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