Multihulls

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

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  1. oldmulti

    Multihull Structure Thoughts

    oldmulti, May 27, 2019 ... 220 221 222
    Replies:
    3,320
    Views:
    704,972
    oldmulti
    May 29, 2023 at 7:29 PM
  2. pioneer_11

    Books for a physicist to learn sailboat design (preference for mutihulls)

    pioneer_11, Mar 10, 2023 ... 2
    Replies:
    17
    Views:
    1,044
    pioneer_11
    May 29, 2023 at 1:52 PM
  3. guzzis3

    Catamaran plans, who have I forgotten ?

    guzzis3, Apr 4, 2023 ... 11 12 13
    Replies:
    190
    Views:
    8,722
    waterbear
    May 28, 2023 at 11:26 PM
  4. Michael78

    Farrier F32A - looking for Plans

    Michael78, Apr 26, 2023
    Replies:
    11
    Views:
    921
    powerabout
    May 22, 2023
  5. AdrianN

    Difference concept of cruising catamarans

    AdrianN, Apr 10, 2023 ... 2 3
    Replies:
    34
    Views:
    2,257
    guzzis3
    May 10, 2023
  6. tz3dcom

    38m trimaran animation

    tz3dcom, May 4, 2023
    Replies:
    1
    Views:
    306
    bajansailor
    May 5, 2023
  7. Paul Scott

    Rudder lift on Boardless Catamarans?

    Paul Scott, Apr 12, 2023
    Replies:
    2
    Views:
    443
    patzefran
    Apr 28, 2023
  8. Sylvain Savoie

    Trimaran scow bow

    Sylvain Savoie, Apr 3, 2023
    Replies:
    8
    Views:
    809
    waterbear
    Apr 25, 2023
  9. voodoo child

    Demountable, 30+ to 40+foot Cat design?

    voodoo child, Feb 3, 2023
    Replies:
    7
    Views:
    1,129
    Boatguy30
    Apr 25, 2023
  10. Philip

    Wing Sail Doubles as an Outrigger?

    Philip, Apr 24, 2023
    Replies:
    4
    Views:
    366
    myszek
    Apr 24, 2023
  11. oldsailor7

    Buccaneer 24 Builders Forum

    oldsailor7, Jul 22, 2009 ... 193 194 195
    Replies:
    2,912
    Views:
    639,191
    fgiccu
    Apr 24, 2023
  12. revintage

    Small trimaran with Tornado/Nacra 5.8 center hull

    revintage, Dec 25, 2021 ... 2 3 4
    Replies:
    50
    Views:
    11,537
    revintage
    Apr 22, 2023
  13. MichaelRoberts

    Rudder hydraulics

    MichaelRoberts, Apr 15, 2023
    Replies:
    8
    Views:
    377
    MichaelRoberts
    Apr 16, 2023
  14. trip the light fandango

    building new amas/floats from recycled beachcat hulls

    trip the light fandango, Apr 23, 2019 ... 7 8 9
    Replies:
    125
    Views:
    19,886
    trip the light fandango
    Apr 16, 2023
  15. MichaelRoberts

    Forces on transom rudder

    MichaelRoberts, Mar 13, 2023
    Replies:
    14
    Views:
    909
    MichaelRoberts
    Apr 15, 2023
  16. revintage

    Forestay bridle fitting

    revintage, Mar 29, 2023
    Replies:
    8
    Views:
    630
    revintage
    Apr 14, 2023
  17. pavel915

    Connecting the demi hulls

    pavel915, Mar 22, 2023 ... 2
    Replies:
    21
    Views:
    1,172
    oldmulti
    Mar 29, 2023
  18. Jeff in Boston

    Order of importance for hull efficiency

    Jeff in Boston, Sep 15, 2020
    Replies:
    12
    Views:
    2,007
    Capt. Peter Wilcox
    Mar 25, 2023
  19. waldemar de vries

    Fontaine Pajot Athena 38

    waldemar de vries, Mar 17, 2023
    Replies:
    2
    Views:
    498
    waldemar de vries
    Mar 23, 2023
  20. lane

    Trimaran amas using extruded polystyrene with epoxy

    lane, Mar 8, 2023 ... 2
    Replies:
    22
    Views:
    1,334
    lane
    Mar 23, 2023
  21. pavel915

    Wooden Catamaran Concept Design

    pavel915, Mar 21, 2023
    Replies:
    7
    Views:
    522
    pavel915
    Mar 21, 2023
  22. HydroNick

    Gougeon Wing Mast Plans

    HydroNick, Apr 4, 2010 ... 2 3
    Replies:
    39
    Views:
    26,734
    MichaelRoberts
    Mar 15, 2023
  23. SailorScience

    Who do you recommend for a major 900K USD build?

    SailorScience, Mar 13, 2023
    Replies:
    6
    Views:
    607
    bajansailor
    Mar 14, 2023
  24. lane

    Trimaran with Parallel Rig

    lane, Mar 12, 2023
    Replies:
    3
    Views:
    480
    lane
    Mar 13, 2023
  25. Bronwen Clark

    Lex Nicol designed catamaran mould

    Bronwen Clark, Mar 4, 2023
    Replies:
    5
    Views:
    644
    oldmulti
    Mar 6, 2023
  26. BananaMan777

    Best resources for learning boat design (Planing hulls)

    BananaMan777, Mar 4, 2023
    Replies:
    10
    Views:
    587
    bajansailor
    Mar 4, 2023
  27. Andrea Wasserliebend

    Ratio of lateral to sail area

    Andrea Wasserliebend, Mar 3, 2023
    Replies:
    5
    Views:
    408
    Skyak
    Mar 3, 2023
  28. SolGato

    Rotating Mast Control and Daggerboard Uphaul

    SolGato, Feb 12, 2023
    Replies:
    8
    Views:
    764
    SolGato
    Feb 20, 2023
  29. Andrea Wasserliebend

    Looking for a small coastal cruising catamaran

    Andrea Wasserliebend, Feb 17, 2023
    Replies:
    6
    Views:
    891
    fallguy
    Feb 18, 2023
  30. geoffkryten

    Catamaran math problem

    geoffkryten, Feb 17, 2023
    Replies:
    3
    Views:
    685
    bajansailor
    Feb 18, 2023
  31. lane

    Split Paddleboard for Amas

    lane, Sep 30, 2022 ... 2
    Replies:
    15
    Views:
    1,663
    BlueBell
    Feb 17, 2023
  32. Sylvain Savoie

    Trimaran fiberglass vs aluminum

    Sylvain Savoie, Feb 13, 2023
    Replies:
    4
    Views:
    630
    SolGato
    Feb 14, 2023
  33. bjn

    Self righting multihull?

    bjn, Feb 27, 2018 ... 2 3 4
    Replies:
    58
    Views:
    9,511
    Paul Scott
    Feb 10, 2023
  34. Kaido Loor

    Passive air cushion hull bottom

    Kaido Loor, Feb 4, 2023
    Replies:
    4
    Views:
    573
    jehardiman
    Feb 4, 2023
  35. tropostudio

    Cat Ketch or Cat Schooner Rig on Trimaran...

    tropostudio, Jan 27, 2023
    Replies:
    13
    Views:
    1,066
    tropostudio
    Jan 29, 2023
  36. fallguy

    Derek Kelsall

    fallguy, Dec 17, 2022
    Replies:
    5
    Views:
    925
    rwatson
    Jan 24, 2023
  37. hashtag_laeuft

    Design of 16' foot beach catamaran

    hashtag_laeuft, Aug 15, 2017 ... 2 3 4
    Replies:
    57
    Views:
    13,144
    BobBill
    Jan 18, 2023
  38. Doug Lord

    High Performance MPX Foil/Self-righting Trimaran-The Test Model

    Doug Lord, Dec 28, 2010 ... 198 199 200
    Replies:
    2,991
    Views:
    715,995
    Nicholas cravey
    Jan 18, 2023
  39. ThomD

    Taulua - The Movie "All for a Horse"

    ThomD, Nov 20, 2022
    Replies:
    3
    Views:
    685
    Cheevo
    Jan 15, 2023
  40. Wattser

    Crowther Buccaneer 37

    Wattser, Jan 9, 2023
    Replies:
    6
    Views:
    870
    SolGato
    Jan 10, 2023
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