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 ... 295 296 297
    Replies:
    4,449
    Views:
    1,217,498
    oldmulti
    Mar 22, 2025 at 9:24 PM
  2. magwas

    Multihull microcruiser design (capsize approach, vol 2)

    magwas, Feb 5, 2025 ... 2
    Replies:
    25
    Views:
    1,559
    montero
    Mar 21, 2025 at 5:50 AM
  3. NIKOLAT

    Pontoon Boat Waterline

    NIKOLAT, Mar 19, 2025 at 3:40 PM
    Replies:
    3
    Views:
    181
    gonzo
    Mar 20, 2025 at 11:17 AM
  4. Ausnp

    Multihull Lightweight Structure

    Ausnp, Mar 13, 2025
    Replies:
    11
    Views:
    477
    bajansailor
    Mar 14, 2025
  5. Multihulls anonymous

    Extra Marstrom 32 and f40 catamaran hulls

    Multihulls anonymous, Mar 19, 2024
    Replies:
    1
    Views:
    1,268
    Multihulls anonymous
    Mar 10, 2025
  6. Coyote Boats

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

    Coyote Boats, Jan 4, 2025
    Replies:
    1
    Views:
    587
    Multihulls anonymous
    Mar 10, 2025
  7. Le_skipper

    1985 catamaran

    Le_skipper, Mar 5, 2025
    Replies:
    7
    Views:
    515
    bajansailor
    Mar 9, 2025
  8. Michael78

    Farrier F32A - looking for Plans

    Michael78, Apr 26, 2023 ... 2
    Replies:
    15
    Views:
    4,865
    i_mac
    Mar 4, 2025
  9. Wrekin

    Dry Strip Planking

    Wrekin, Feb 16, 2025 ... 3 4 5
    Replies:
    65
    Views:
    3,083
    i_mac
    Mar 4, 2025
  10. MorrisCode

    Adding horizontal bulkhead to beach cat

    MorrisCode, Mar 2, 2025
    Replies:
    6
    Views:
    348
    Skip Johnson
    Mar 4, 2025
  11. Mulkari

    Designing a fast open deck catamaran

    Mulkari, Nov 26, 2024 ... 9 10 11
    Replies:
    150
    Views:
    11,256
    Mulkari
    Mar 3, 2025
  12. rael dobkins

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

    rael dobkins, Feb 22, 2025
    Replies:
    0
    Views:
    323
    rael dobkins
    Feb 22, 2025
  13. SHIVANK

    Composite Catamaran Analysis

    SHIVANK, Feb 18, 2025
    Replies:
    0
    Views:
    424
    SHIVANK
    Feb 18, 2025
  14. magwas

    Multihull microcruiser design considerations (capsize survival)

    magwas, Jan 5, 2025 ... 2 3
    Replies:
    33
    Views:
    2,291
    montero
    Feb 16, 2025
  15. rael dobkins

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

    rael dobkins, Feb 14, 2025
    Replies:
    0
    Views:
    367
    rael dobkins
    Feb 14, 2025
  16. lucdekeyser

    80 foot cargo harryproa

    lucdekeyser, Nov 15, 2020 ... 10 11 12
    Replies:
    177
    Views:
    49,906
    rob denney
    Jan 31, 2025
  17. waterbear

    The revisionist mythology of Wharram

    waterbear, Dec 8, 2023 ... 4 5 6
    Replies:
    85
    Views:
    13,482
    cando2
    Jan 22, 2025
  18. TriJody

    16' Apollo Vaka / 18' Prindle Ama Trimaran

    TriJody, Oct 4, 2015
    Replies:
    4
    Views:
    3,091
    Tallseek
    Jan 20, 2025
  19. brian eiland

    X-Beam and the Giant

    brian eiland, Nov 12, 2006 ... 2 3
    Replies:
    36
    Views:
    16,456
    Herreshock
    Jan 11, 2025
  20. Owly

    Hobie Hulls (buyer's remorse)

    Owly, Feb 22, 2020 ... 2 3 4
    Replies:
    50
    Views:
    15,738
    Tallseek
    Jan 10, 2025
  21. revintage

    Main beam waterstays on small foiling tri

    revintage, Mar 25, 2019 ... 2
    Replies:
    26
    Views:
    5,871
    Tallseek
    Jan 10, 2025
  22. rael dobkins

    Proa, Fast Downwind Surfing, ZERO Weather Helm.

    rael dobkins, Dec 31, 2024
    Replies:
    2
    Views:
    557
    rael dobkins
    Jan 9, 2025
  23. yabert

    45' solar catamaran

    yabert, Nov 25, 2024 ... 5 6 7
    Replies:
    103
    Views:
    5,330
    gonzo
    Jan 4, 2025
  24. ChronoFish

    Kayak to Trimaran Conversion

    ChronoFish, Dec 15, 2024
    Replies:
    5
    Views:
    619
    ChronoFish
    Dec 16, 2024
  25. James Wellington

    Multi vs monohulls in Beaufort 12

    James Wellington, Nov 4, 2024
    Replies:
    14
    Views:
    1,499
    montero
    Dec 10, 2024
  26. waikikin

    Crowther Spindrift

    waikikin, Oct 18, 2014 ... 3 4 5
    Replies:
    66
    Views:
    9,331
    jimmyDu
    Dec 4, 2024
  27. SMA

    KD 650

    SMA, Nov 24, 2024
    Replies:
    2
    Views:
    788
    jamez
    Dec 3, 2024
  28. brian eiland

    Central Nacelle and Centerboard on CRUISING Cat

    brian eiland, Jun 15, 2024
    Replies:
    12
    Views:
    1,647
    brian eiland
    Nov 21, 2024
  29. redou

    Metal Multihull Cruiser - Seeking Input

    redou, Dec 6, 2007 ... 2
    Replies:
    16
    Views:
    3,974
    TANSL
    Nov 9, 2024
  30. kekdu

    Looking for a Low-Cost Easy to build multihull sailing design

    kekdu, Sep 27, 2024 ... 2
    Replies:
    19
    Views:
    3,140
    tane
    Nov 7, 2024
  31. rael dobkins

    Inside out short Vid, of a Balkan Proa, cruising along....

    rael dobkins, Nov 7, 2024
    Replies:
    0
    Views:
    507
    rael dobkins
    Nov 7, 2024
  32. lucdekeyser

    flat vs convex surfaces

    lucdekeyser, Oct 4, 2024 ... 7 8 9
    Replies:
    133
    Views:
    8,171
    lucdekeyser
    Nov 6, 2024
  33. Jagarwal

    Catamaran crossbeam design

    Jagarwal, Oct 9, 2024
    Replies:
    5
    Views:
    1,221
    gonzo
    Nov 3, 2024
  34. Mulkari

    High end vs low end cruising catamaran

    Mulkari, Oct 17, 2024 ... 2 3
    Replies:
    36
    Views:
    3,654
    gonzo
    Nov 1, 2024
  35. sailingsunstar2

    recognize this multihull?

    sailingsunstar2, Jun 9, 2024
    Replies:
    13
    Views:
    2,064
    cando2
    Oct 20, 2024
  36. rob denney

    Building a Harryproa C50 in Fiji

    rob denney, Oct 17, 2024
    Replies:
    3
    Views:
    1,047
    rob denney
    Oct 19, 2024
  37. rael dobkins

    Crab Claws can hang off anything, even just 3 ropes...

    rael dobkins, Oct 18, 2024
    Replies:
    0
    Views:
    658
    rael dobkins
    Oct 18, 2024
  38. nueva30

    Newick Val Rebuild

    nueva30, Sep 9, 2024 ... 2
    Replies:
    25
    Views:
    2,387
    nueva30
    Oct 18, 2024
  39. Coyote Boats

    Help identifying this 30-ish foot catamaran

    Coyote Boats, Oct 12, 2024
    Replies:
    2
    Views:
    717
    Coyote Boats
    Oct 16, 2024
  40. flagg

    Bob Oram website - something looks awfully wrong here??

    flagg, Oct 9, 2021
    Replies:
    2
    Views:
    11,901
    Flows
    Oct 9, 2024
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