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 ... 221 222 223
    Replies:
    3,339
    Views:
    712,612
    oldmulti
    Jun 7, 2023 at 6:46 PM
  2. revintage

    Small trimaran with Tornado/Nacra 5.8 center hull

    revintage, Dec 25, 2021 ... 2 3 4
    Replies:
    51
    Views:
    11,759
    revintage
    Jun 7, 2023 at 3:05 AM
  3. seandepagnier

    storm sail on older trimarans

    seandepagnier, Jun 5, 2023 at 9:51 PM
    Replies:
    1
    Views:
    289
    cavalier mk2
    Jun 6, 2023 at 11:30 AM
  4. guzzis3

    Catamaran plans, who have I forgotten ?

    guzzis3, Apr 4, 2023 ... 11 12 13
    Replies:
    191
    Views:
    9,261
    oldmulti
    Jun 3, 2023 at 11:57 PM
  5. voodoo child

    Demountable, 30+ to 40+foot Cat design?

    voodoo child, Feb 3, 2023
    Replies:
    10
    Views:
    1,351
    fallguy
    Jun 3, 2023 at 11:07 PM
  6. Forecaddie

    stabiliser Ama for small power tri

    Forecaddie, Jun 2, 2023 at 11:00 AM
    Replies:
    1
    Views:
    306
    SolGato
    Jun 2, 2023 at 5:32 PM
  7. Pete222

    Cause of slamming on Gemini 105MC

    Pete222, May 31, 2023
    Replies:
    6
    Views:
    432
    guzzis3
    Jun 1, 2023
  8. pioneer_11

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

    pioneer_11, Mar 10, 2023 ... 2
    Replies:
    17
    Views:
    1,262
    pioneer_11
    May 29, 2023
  9. Michael78

    Farrier F32A - looking for Plans

    Michael78, Apr 26, 2023
    Replies:
    11
    Views:
    950
    powerabout
    May 22, 2023
  10. AdrianN

    Difference concept of cruising catamarans

    AdrianN, Apr 10, 2023 ... 2 3
    Replies:
    34
    Views:
    2,339
    guzzis3
    May 10, 2023
  11. tz3dcom

    38m trimaran animation

    tz3dcom, May 4, 2023
    Replies:
    1
    Views:
    344
    bajansailor
    May 5, 2023
  12. Paul Scott

    Rudder lift on Boardless Catamarans?

    Paul Scott, Apr 12, 2023
    Replies:
    2
    Views:
    464
    patzefran
    Apr 28, 2023
  13. Sylvain Savoie

    Trimaran scow bow

    Sylvain Savoie, Apr 3, 2023
    Replies:
    8
    Views:
    836
    waterbear
    Apr 25, 2023
  14. Philip

    Wing Sail Doubles as an Outrigger?

    Philip, Apr 24, 2023
    Replies:
    4
    Views:
    391
    myszek
    Apr 24, 2023
  15. oldsailor7

    Buccaneer 24 Builders Forum

    oldsailor7, Jul 22, 2009 ... 193 194 195
    Replies:
    2,912
    Views:
    639,976
    fgiccu
    Apr 24, 2023
  16. MichaelRoberts

    Rudder hydraulics

    MichaelRoberts, Apr 15, 2023
    Replies:
    8
    Views:
    391
    MichaelRoberts
    Apr 16, 2023
  17. 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:
    19,952
    trip the light fandango
    Apr 16, 2023
  18. MichaelRoberts

    Forces on transom rudder

    MichaelRoberts, Mar 13, 2023
    Replies:
    14
    Views:
    938
    MichaelRoberts
    Apr 15, 2023
  19. revintage

    Forestay bridle fitting

    revintage, Mar 29, 2023
    Replies:
    8
    Views:
    642
    revintage
    Apr 14, 2023
  20. pavel915

    Connecting the demi hulls

    pavel915, Mar 22, 2023 ... 2
    Replies:
    21
    Views:
    1,206
    oldmulti
    Mar 29, 2023
  21. Jeff in Boston

    Order of importance for hull efficiency

    Jeff in Boston, Sep 15, 2020
    Replies:
    12
    Views:
    2,040
    Capt. Peter Wilcox
    Mar 25, 2023
  22. waldemar de vries

    Fontaine Pajot Athena 38

    waldemar de vries, Mar 17, 2023
    Replies:
    2
    Views:
    512
    waldemar de vries
    Mar 23, 2023
  23. lane

    Trimaran amas using extruded polystyrene with epoxy

    lane, Mar 8, 2023 ... 2
    Replies:
    22
    Views:
    1,386
    lane
    Mar 23, 2023
  24. pavel915

    Wooden Catamaran Concept Design

    pavel915, Mar 21, 2023
    Replies:
    7
    Views:
    555
    pavel915
    Mar 21, 2023
  25. HydroNick

    Gougeon Wing Mast Plans

    HydroNick, Apr 4, 2010 ... 2 3
    Replies:
    39
    Views:
    26,809
    MichaelRoberts
    Mar 15, 2023
  26. SailorScience

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

    SailorScience, Mar 13, 2023
    Replies:
    6
    Views:
    632
    bajansailor
    Mar 14, 2023
  27. lane

    Trimaran with Parallel Rig

    lane, Mar 12, 2023
    Replies:
    3
    Views:
    503
    lane
    Mar 13, 2023
  28. Bronwen Clark

    Lex Nicol designed catamaran mould

    Bronwen Clark, Mar 4, 2023
    Replies:
    5
    Views:
    662
    oldmulti
    Mar 6, 2023
  29. BananaMan777

    Best resources for learning boat design (Planing hulls)

    BananaMan777, Mar 4, 2023
    Replies:
    10
    Views:
    638
    bajansailor
    Mar 4, 2023
  30. Andrea Wasserliebend

    Ratio of lateral to sail area

    Andrea Wasserliebend, Mar 3, 2023
    Replies:
    5
    Views:
    420
    Skyak
    Mar 3, 2023
  31. SolGato

    Rotating Mast Control and Daggerboard Uphaul

    SolGato, Feb 12, 2023
    Replies:
    8
    Views:
    785
    SolGato
    Feb 20, 2023
  32. Andrea Wasserliebend

    Looking for a small coastal cruising catamaran

    Andrea Wasserliebend, Feb 17, 2023
    Replies:
    6
    Views:
    915
    fallguy
    Feb 18, 2023
  33. geoffkryten

    Catamaran math problem

    geoffkryten, Feb 17, 2023
    Replies:
    3
    Views:
    704
    bajansailor
    Feb 18, 2023
  34. lane

    Split Paddleboard for Amas

    lane, Sep 30, 2022 ... 2
    Replies:
    15
    Views:
    1,691
    BlueBell
    Feb 17, 2023
  35. Sylvain Savoie

    Trimaran fiberglass vs aluminum

    Sylvain Savoie, Feb 13, 2023
    Replies:
    4
    Views:
    648
    SolGato
    Feb 14, 2023
  36. bjn

    Self righting multihull?

    bjn, Feb 27, 2018 ... 2 3 4
    Replies:
    58
    Views:
    9,560
    Paul Scott
    Feb 10, 2023
  37. Kaido Loor

    Passive air cushion hull bottom

    Kaido Loor, Feb 4, 2023
    Replies:
    4
    Views:
    596
    jehardiman
    Feb 4, 2023
  38. tropostudio

    Cat Ketch or Cat Schooner Rig on Trimaran...

    tropostudio, Jan 27, 2023
    Replies:
    13
    Views:
    1,096
    tropostudio
    Jan 29, 2023
  39. fallguy

    Derek Kelsall

    fallguy, Dec 17, 2022
    Replies:
    5
    Views:
    946
    rwatson
    Jan 24, 2023
  40. hashtag_laeuft

    Design of 16' foot beach catamaran

    hashtag_laeuft, Aug 15, 2017 ... 2 3 4
    Replies:
    57
    Views:
    13,210
    BobBill
    Jan 18, 2023
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