Multihulls

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

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  1. AdrianN

    Difference concept of cruising catamarans

    AdrianN, Apr 10, 2023 ... 2 3
    Replies:
    34
    Views:
    3,248
    guzzis3
    May 10, 2023
  2. tz3dcom

    38m trimaran animation

    tz3dcom, May 4, 2023
    Replies:
    1
    Views:
    581
    bajansailor
    May 5, 2023
  3. Paul Scott

    Rudder lift on Boardless Catamarans?

    Paul Scott, Apr 12, 2023
    Replies:
    2
    Views:
    677
    patzefran
    Apr 28, 2023
  4. Sylvain Savoie

    Trimaran scow bow

    Sylvain Savoie, Apr 3, 2023
    Replies:
    8
    Views:
    1,199
    waterbear
    Apr 25, 2023
  5. Philip

    Wing Sail Doubles as an Outrigger?

    Philip, Apr 24, 2023
    Replies:
    4
    Views:
    647
    myszek
    Apr 24, 2023
  6. MichaelRoberts

    Rudder hydraulics

    MichaelRoberts, Apr 15, 2023
    Replies:
    8
    Views:
    618
    MichaelRoberts
    Apr 16, 2023
  7. 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:
    20,945
    trip the light fandango
    Apr 16, 2023
  8. MichaelRoberts

    Forces on transom rudder

    MichaelRoberts, Mar 13, 2023
    Replies:
    14
    Views:
    1,381
    MichaelRoberts
    Apr 15, 2023
  9. revintage

    Forestay bridle fitting

    revintage, Mar 29, 2023
    Replies:
    8
    Views:
    853
    revintage
    Apr 14, 2023
  10. pavel915

    Connecting the demi hulls

    pavel915, Mar 22, 2023 ... 2
    Replies:
    21
    Views:
    1,637
    oldmulti
    Mar 29, 2023
  11. Jeff in Boston

    Order of importance for hull efficiency

    Jeff in Boston, Sep 15, 2020
    Replies:
    12
    Views:
    2,275
    Capt. Peter Wilcox
    Mar 25, 2023
  12. waldemar de vries

    Fontaine Pajot Athena 38

    waldemar de vries, Mar 17, 2023
    Replies:
    2
    Views:
    671
    waldemar de vries
    Mar 23, 2023
  13. lane

    Trimaran amas using extruded polystyrene with epoxy

    lane, Mar 8, 2023 ... 2
    Replies:
    22
    Views:
    1,900
    lane
    Mar 23, 2023
  14. pavel915

    Wooden Catamaran Concept Design

    pavel915, Mar 21, 2023
    Replies:
    7
    Views:
    904
    pavel915
    Mar 21, 2023
  15. HydroNick

    Gougeon Wing Mast Plans

    HydroNick, Apr 4, 2010 ... 2 3
    Replies:
    39
    Views:
    27,708
    MichaelRoberts
    Mar 15, 2023
  16. SailorScience

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

    SailorScience, Mar 13, 2023
    Replies:
    6
    Views:
    843
    bajansailor
    Mar 14, 2023
  17. lane

    Trimaran with Parallel Rig

    lane, Mar 12, 2023
    Replies:
    3
    Views:
    763
    lane
    Mar 13, 2023
  18. Bronwen Clark

    Lex Nicol designed catamaran mould

    Bronwen Clark, Mar 4, 2023
    Replies:
    5
    Views:
    863
    oldmulti
    Mar 6, 2023
  19. BananaMan777

    Best resources for learning boat design (Planing hulls)

    BananaMan777, Mar 4, 2023
    Replies:
    10
    Views:
    988
    bajansailor
    Mar 4, 2023
  20. Andrea Wasserliebend

    Ratio of lateral to sail area

    Andrea Wasserliebend, Mar 3, 2023
    Replies:
    5
    Views:
    606
    Skyak
    Mar 3, 2023
  21. SolGato

    Rotating Mast Control and Daggerboard Uphaul

    SolGato, Feb 12, 2023
    Replies:
    8
    Views:
    1,075
    SolGato
    Feb 20, 2023
  22. Andrea Wasserliebend

    Looking for a small coastal cruising catamaran

    Andrea Wasserliebend, Feb 17, 2023
    Replies:
    6
    Views:
    1,287
    fallguy
    Feb 18, 2023
  23. geoffkryten

    Catamaran math problem

    geoffkryten, Feb 17, 2023
    Replies:
    3
    Views:
    984
    bajansailor
    Feb 18, 2023
  24. lane

    Split Paddleboard for Amas

    lane, Sep 30, 2022 ... 2
    Replies:
    15
    Views:
    2,040
    BlueBell
    Feb 17, 2023
  25. Sylvain Savoie

    Trimaran fiberglass vs aluminum

    Sylvain Savoie, Feb 13, 2023
    Replies:
    4
    Views:
    952
    SolGato
    Feb 14, 2023
  26. Kaido Loor

    Passive air cushion hull bottom

    Kaido Loor, Feb 4, 2023
    Replies:
    4
    Views:
    788
    jehardiman
    Feb 4, 2023
  27. tropostudio

    Cat Ketch or Cat Schooner Rig on Trimaran...

    tropostudio, Jan 27, 2023
    Replies:
    13
    Views:
    1,353
    tropostudio
    Jan 29, 2023
  28. fallguy

    Derek Kelsall

    fallguy, Dec 17, 2022
    Replies:
    5
    Views:
    1,112
    rwatson
    Jan 24, 2023
  29. hashtag_laeuft

    Design of 16' foot beach catamaran

    hashtag_laeuft, Aug 15, 2017 ... 2 3 4
    Replies:
    57
    Views:
    13,989
    BobBill
    Jan 18, 2023
  30. Doug Lord

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

    Doug Lord, Dec 28, 2010 ... 198 199 200
    Replies:
    2,991
    Views:
    726,938
    Nicholas cravey
    Jan 18, 2023
  31. ThomD

    Taulua - The Movie "All for a Horse"

    ThomD, Nov 20, 2022
    Replies:
    3
    Views:
    804
    Cheevo
    Jan 15, 2023
  32. Wattser

    Crowther Buccaneer 37

    Wattser, Jan 9, 2023
    Replies:
    6
    Views:
    1,195
    SolGato
    Jan 10, 2023
  33. fallguy

    Bow anchoring

    fallguy, Oct 10, 2020 ... 2 3
    Replies:
    34
    Views:
    3,612
    fallguy
    Jan 10, 2023
  34. David L. Huber

    Hull shape addressing breaking effect from pitching

    David L. Huber, Jan 6, 2023
    Replies:
    3
    Views:
    832
    oldmulti
    Jan 6, 2023
  35. Victor Izidoro da silva

    trimaran buccaneer 28- Crowther 28

    Victor Izidoro da silva, Dec 29, 2022
    Replies:
    2
    Views:
    1,046
    bruceb
    Dec 30, 2022
  36. rael dobkins

    Proa Rudderless, Down Wind sailing!

    rael dobkins, Dec 13, 2022
    Replies:
    0
    Views:
    716
    rael dobkins
    Dec 13, 2022
  37. Doug Lord

    A Class Cat Design-Board Hydrodynamics(Tom Speer)

    Doug Lord, Jul 13, 2014
    Replies:
    5
    Views:
    2,522
    wet feet
    Dec 6, 2022
  38. Paul Scott

    Center of effort of the A class catamaran sail

    Paul Scott, Nov 24, 2022
    Replies:
    12
    Views:
    1,082
    Paul Scott
    Nov 28, 2022
  39. Doug Lord

    Jessica Rabbit-40' Foil Equipped Trimaran

    Doug Lord, Mar 10, 2013 ... 2
    Replies:
    19
    Views:
    15,218
    huey 2
    Nov 26, 2022
  40. BobBill

    Seeking Assistance, Again

    BobBill, Nov 21, 2022
    Replies:
    3
    Views:
    593
    fallguy
    Nov 21, 2022
Showing threads 41 to 80 of 3,268

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