Multihulls

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

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  1. RSD

    Length vs Beam - will this cause any problems?

    RSD, Jun 16, 2024 ... 2
    Replies:
    27
    Views:
    3,219
    brian eiland
    Jun 18, 2024
  2. Pete222

    Cause of slamming on Gemini 105MC

    Pete222, May 31, 2023
    Replies:
    8
    Views:
    3,428
    xcalak
    Jun 17, 2024
  3. fiunery

    outboards in nacelles

    fiunery, Aug 13, 2014 ... 2
    Replies:
    29
    Views:
    16,144
    brian eiland
    Jun 16, 2024
  4. brian eiland

    Aft-Mast Catamaran

    brian eiland, Oct 14, 2022
    Replies:
    7
    Views:
    3,146
    brian eiland
    Jun 15, 2024
  5. Corley

    Tremolino tales

    Corley, Aug 24, 2017 ... 2 3
    Replies:
    35
    Views:
    11,246
    Corley_01
    Jun 11, 2024
  6. Stephen Ditmore

    Incat is building a huge EV ferry!

    Stephen Ditmore, May 31, 2024
    Replies:
    2
    Views:
    1,305
    rwatson
    Jun 4, 2024
  7. Air Tahiti

    Cross Beam thoughts for small Tri

    Air Tahiti, Aug 20, 2023 ... 2
    Replies:
    28
    Views:
    5,017
    Air Tahiti
    Jun 2, 2024
  8. guzzis3

    Avalon 9 an Scarab 32

    guzzis3, May 25, 2024
    Replies:
    0
    Views:
    1,342
    guzzis3
    May 25, 2024
  9. AdrianN

    Daggerboard position

    AdrianN, May 22, 2024
    Replies:
    5
    Views:
    1,246
    cavalier mk2
    May 22, 2024
  10. ruysg

    Books on catamaran design and principles

    ruysg, Apr 30, 2018
    Replies:
    8
    Views:
    8,836
    Vijay Krishna
    May 22, 2024
  11. georgehype

    Floating Island, more thoughts Opinions please.

    georgehype, May 16, 2024
    Replies:
    4
    Views:
    1,337
    fallguy
    May 20, 2024
  12. Onefish

    Aluminum tube sectioned mast

    Onefish, Jan 29, 2020 ... 2
    Replies:
    23
    Views:
    6,788
    Alex0001
    May 3, 2024
  13. Nstray11

    Small cat crossbeam questions

    Nstray11, Apr 29, 2024
    Replies:
    9
    Views:
    1,747
    Nstray11
    Apr 29, 2024
  14. Quattro64

    Thermo-Lite Boards

    Quattro64, Apr 23, 2024 ... 2 3
    Replies:
    37
    Views:
    5,549
    Quattro64
    Apr 27, 2024
  15. Bob Rosa

    Cooling water thru hull pickup placement

    Bob Rosa, Apr 24, 2024
    Replies:
    7
    Views:
    1,338
    Bob Rosa
    Apr 26, 2024
  16. Teamscarab

    Siren 8.4 catamaran.

    Teamscarab, Sep 16, 2021
    Replies:
    10
    Views:
    8,347
    guzzis3
    Apr 16, 2024
  17. Skip Johnson

    Mast raising/lowering question

    Skip Johnson, Apr 12, 2024
    Replies:
    5
    Views:
    1,482
    Skip Johnson
    Apr 15, 2024
  18. Skip JayR

    How to sail/buy racing trimarans in cruising modus ?

    Skip JayR, Sep 30, 2015 ... 2
    Replies:
    20
    Views:
    11,741
    patzefran
    Apr 13, 2024
  19. hashtag_laeuft

    Balance considerations for Boardless Beachcat

    hashtag_laeuft, Apr 1, 2024
    Replies:
    4
    Views:
    1,572
    hashtag_laeuft
    Apr 11, 2024
  20. Adrian Baker

    Design of wood epoxy trimaran beams

    Adrian Baker, Dec 23, 2023 ... 2 3 4
    Replies:
    53
    Views:
    10,317
    nueva30
    Apr 11, 2024
  21. Slimes

    Cat Hull Design

    Slimes, Mar 18, 2024 ... 2
    Replies:
    17
    Views:
    3,332
    tane
    Mar 22, 2024
  22. Mulkari

    Light weight big open deck catamaran

    Mulkari, Feb 21, 2024 ... 2 3 4
    Replies:
    50
    Views:
    11,634
    Mulkari
    Mar 19, 2024
  23. Scopic

    Over built flat deck power cat

    Scopic, Mar 11, 2024
    Replies:
    12
    Views:
    1,931
    Ad Hoc
    Mar 12, 2024
  24. Forecaddie

    25 foot 7.5m Drua research

    Forecaddie, Nov 28, 2023
    Replies:
    4
    Views:
    1,999
    rob denney
    Mar 9, 2024
  25. IvanAntun

    Inquiry for information from experienced boatbuilders and boat designers

    IvanAntun, Feb 8, 2024 ... 2 3
    Replies:
    34
    Views:
    5,505
    IvanAntun
    Mar 9, 2024
  26. Manfred.pech

    Everglades Challenge 2024

    Manfred.pech, Mar 4, 2024
    Replies:
    13
    Views:
    3,690
    portacruise
    Mar 7, 2024
  27. member 76956

    Custom Multihulls

    member 76956, May 8, 2022 ... 2
    Replies:
    24
    Views:
    8,976
    brian eiland
    Mar 2, 2024
  28. kimosadler

    Aluminum Strongall Sailing Catamaran Plans?

    kimosadler, May 4, 2009 ... 2
    Replies:
    19
    Views:
    54,419
    Rico chico
    Mar 1, 2024
  29. Michael78

    Multihulls Direct?

    Michael78, Feb 28, 2024
    Replies:
    0
    Views:
    1,768
    Michael78
    Feb 28, 2024
  30. Jeremy Perkins

    Beginning: Hull shape and size

    Jeremy Perkins, Feb 12, 2024
    Replies:
    11
    Views:
    2,282
    BlueBell
    Feb 18, 2024
  31. Paul Scott

    Center of effort of the A class catamaran sail

    Paul Scott, Nov 24, 2022 ... 2
    Replies:
    16
    Views:
    4,123
    Erwan
    Feb 9, 2024
  32. tanjera

    Malcolm Tennant "Wild Thing" Tri

    tanjera, Sep 28, 2014 ... 2
    Replies:
    21
    Views:
    10,576
    oldmulti
    Feb 5, 2024
  33. Thule

    Wooden caramaran wisdom

    Thule, Jan 26, 2024 ... 2
    Replies:
    18
    Views:
    3,320
    Thule
    Jan 31, 2024
  34. Dolfiman

    Arkea Ultim challenge : the race around the world, in solo !

    Dolfiman, Jan 6, 2024
    Replies:
    8
    Views:
    2,593
    Dolfiman
    Jan 31, 2024
  35. Lucainbarca

    Rival 21 from batavento sailmakers brazil

    Lucainbarca, Apr 20, 2019 ... 2
    Replies:
    25
    Views:
    11,409
    Tchamo
    Jan 25, 2024
  36. Ilikebigboatsandicanotlie

    Limits to the beam of a catamaran ratio ?

    Ilikebigboatsandicanotlie, Dec 29, 2023
    Replies:
    13
    Views:
    4,027
    C. Dog
    Jan 19, 2024
  37. Steel Hull

    FAO 7.8 meter trimaran ocean capable?

    Steel Hull, Sep 30, 2023
    Replies:
    8
    Views:
    3,334
    gonzo
    Jan 16, 2024
  38. i_mac

    Mast Rotation Systems

    i_mac, Jan 8, 2024
    Replies:
    5
    Views:
    2,326
    Blueknarr
    Jan 15, 2024
  39. Corley

    Lex Nicol, did he ever create any stock plans?

    Corley, Mar 24, 2010 ... 2
    Replies:
    27
    Views:
    17,032
    C. Dog
    Jan 8, 2024
  40. James Wellington

    Solid laminate frp

    James Wellington, Dec 14, 2023 ... 2 3
    Replies:
    40
    Views:
    5,251
    latestarter
    Dec 26, 2023
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