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 ... 300 301 302
    Replies:
    4,527
    Views:
    1,303,010
    oldmulti
    Jul 1, 2025 at 12:41 AM
  2. skier

    Gary Dierking Outrigger Canoes

    skier, Jun 28, 2025 at 7:03 AM
    Replies:
    6
    Views:
    238
    Igor
    Jun 29, 2025 at 8:34 AM
  3. Jardel de Olivenbaun

    Model from a study plan

    Jardel de Olivenbaun, Jun 19, 2025 ... 2
    Replies:
    23
    Views:
    916
    waterbear
    Jun 28, 2025 at 3:13 AM
  4. skier

    Moana Outrigger Sailing Canoe

    skier, Jun 26, 2025 at 8:00 AM
    Replies:
    8
    Views:
    343
    Igor
    Jun 27, 2025 at 3:09 PM
  5. Mulkari

    Designing a fast open deck catamaran

    Mulkari, Nov 26, 2024 ... 9 10 11
    Replies:
    156
    Views:
    17,242
    cando2
    Jun 16, 2025
  6. Mads Prag Roesen

    Balance of a trimaran: NEEL 51

    Mads Prag Roesen, May 12, 2025
    Replies:
    12
    Views:
    820
    CarlosK2
    Jun 10, 2025
  7. MichaelRoberts

    Chinese electric winch?

    MichaelRoberts, Apr 22, 2024
    Replies:
    6
    Views:
    1,792
    starcmr
    Jun 10, 2025
  8. TrimaranMan

    My Trimaran and catamaran website

    TrimaranMan, Jun 3, 2025
    Replies:
    0
    Views:
    384
    TrimaranMan
    Jun 3, 2025
  9. yabert

    45' solar catamaran

    yabert, Nov 25, 2024 ... 6 7 8
    Replies:
    116
    Views:
    9,173
    SolGato
    May 29, 2025
  10. revintage

    Small trimaran with Tornado/Nacra 5.8 center hull

    revintage, Dec 25, 2021 ... 3 4 5
    Replies:
    64
    Views:
    20,664
    patzefran
    May 28, 2025
  11. etoimene

    KHSD demountable 27 or 30 ft catamaran

    etoimene, May 25, 2025
    Replies:
    12
    Views:
    677
    etoimene
    May 27, 2025
  12. Dolfiman

    Ultim at full speed on rough sea

    Dolfiman, May 14, 2025
    Replies:
    3
    Views:
    624
    redreuben
    May 25, 2025
  13. magwas

    Multihull microcruiser design (capsize approach, vol 2)

    magwas, Feb 5, 2025 ... 2
    Replies:
    27
    Views:
    2,913
    montero
    May 25, 2025
  14. Bigfork

    Mashup Trimaran (continued)

    Bigfork, Feb 17, 2021 ... 4 5 6
    Replies:
    77
    Views:
    20,605
    Bigfork
    May 24, 2025
  15. cando2

    questions and ideas for rob denney

    cando2, Jun 13, 2024 ... 2 3 4
    Replies:
    46
    Views:
    8,121
    rob denney
    May 11, 2025
  16. Kurtz

    Adjustable float dihedral

    Kurtz, Apr 23, 2025
    Replies:
    14
    Views:
    936
    Kurtz
    Apr 30, 2025
  17. Paul Scott

    Has there been any discussion of this?

    Paul Scott, Apr 23, 2025
    Replies:
    4
    Views:
    749
    jehardiman
    Apr 25, 2025
  18. Kurtz

    Stress (stiffness) testing a small tri hull

    Kurtz, Apr 10, 2025 ... 2
    Replies:
    17
    Views:
    1,732
    Kurtz
    Apr 19, 2025
  19. Keith Wilkins

    Leaking Centerboard Pivot bolt

    Keith Wilkins, Mar 31, 2025
    Replies:
    6
    Views:
    781
    cando2
    Apr 11, 2025
  20. Doug Lord

    Steve and Dave Clarks UFO

    Doug Lord, Aug 24, 2016 ... 6 7 8
    Replies:
    117
    Views:
    41,195
    CaptainRed
    Apr 10, 2025
  21. Coyote Boats

    Demountable 25-30' catamarans - any used boats out there?

    Coyote Boats, Jan 4, 2025
    Replies:
    2
    Views:
    1,134
    WarrenM
    Apr 8, 2025
  22. fallguy

    River anchoring for a catamaran

    fallguy, Mar 31, 2025 ... 2
    Replies:
    24
    Views:
    1,485
    Will Gilmore
    Apr 5, 2025
  23. Daniel Reilly

    Russian Proa in Massachusetts Circa 2019

    Daniel Reilly, Mar 29, 2025
    Replies:
    4
    Views:
    664
    comfisherman
    Mar 30, 2025
  24. Duane Lutes

    Crowther Kraken 33 - Crossbeams

    Duane Lutes, Mar 28, 2025
    Replies:
    5
    Views:
    648
    peterbike
    Mar 30, 2025
  25. NIKOLAT

    Pontoon Boat Waterline

    NIKOLAT, Mar 19, 2025
    Replies:
    3
    Views:
    537
    gonzo
    Mar 20, 2025
  26. Ausnp

    Multihull Lightweight Structure

    Ausnp, Mar 13, 2025
    Replies:
    11
    Views:
    1,137
    bajansailor
    Mar 14, 2025
  27. Multihulls anonymous

    Extra Marstrom 32 and f40 catamaran hulls

    Multihulls anonymous, Mar 19, 2024
    Replies:
    1
    Views:
    1,536
    Multihulls anonymous
    Mar 10, 2025
  28. Le_skipper

    1985 catamaran

    Le_skipper, Mar 5, 2025
    Replies:
    7
    Views:
    848
    bajansailor
    Mar 9, 2025
  29. Michael78

    Farrier F32A - looking for Plans

    Michael78, Apr 26, 2023 ... 2
    Replies:
    15
    Views:
    5,823
    i_mac
    Mar 4, 2025
  30. Wrekin

    Dry Strip Planking

    Wrekin, Feb 16, 2025 ... 3 4 5
    Replies:
    65
    Views:
    4,897
    i_mac
    Mar 4, 2025
  31. MorrisCode

    Adding horizontal bulkhead to beach cat

    MorrisCode, Mar 2, 2025
    Replies:
    6
    Views:
    652
    Skip Johnson
    Mar 4, 2025
  32. rael dobkins

    Caught aback is a huge problem on Shunters, Junk Rigs solve that well!

    rael dobkins, Feb 22, 2025
    Replies:
    0
    Views:
    755
    rael dobkins
    Feb 22, 2025
  33. SHIVANK

    Composite Catamaran Analysis

    SHIVANK, Feb 18, 2025
    Replies:
    0
    Views:
    767
    SHIVANK
    Feb 18, 2025
  34. magwas

    Multihull microcruiser design considerations (capsize survival)

    magwas, Jan 5, 2025 ... 2 3
    Replies:
    33
    Views:
    3,411
    montero
    Feb 16, 2025
  35. rael dobkins

    The Full Story of a Balkan Proa, the Zen of Spartan Philosophy...

    rael dobkins, Feb 14, 2025
    Replies:
    0
    Views:
    636
    rael dobkins
    Feb 14, 2025
  36. lucdekeyser

    80 foot cargo harryproa

    lucdekeyser, Nov 15, 2020 ... 10 11 12
    Replies:
    177
    Views:
    53,002
    rob denney
    Jan 31, 2025
  37. waterbear

    The revisionist mythology of Wharram

    waterbear, Dec 8, 2023 ... 4 5 6
    Replies:
    85
    Views:
    18,004
    cando2
    Jan 22, 2025
  38. TriJody

    16' Apollo Vaka / 18' Prindle Ama Trimaran

    TriJody, Oct 4, 2015
    Replies:
    4
    Views:
    3,400
    Tallseek
    Jan 20, 2025
  39. brian eiland

    X-Beam and the Giant

    brian eiland, Nov 12, 2006 ... 2 3
    Replies:
    36
    Views:
    17,153
    Herreshock
    Jan 11, 2025
  40. Owly

    Hobie Hulls (buyer's remorse)

    Owly, Feb 22, 2020 ... 2 3 4
    Replies:
    50
    Views:
    17,101
    Tallseek
    Jan 10, 2025
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