Multihulls

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

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  1. jmoropeza

    Newbie asking for advice

    jmoropeza, Oct 17, 2021 ... 2 3 4
    Replies:
    53
    Views:
    15,935
    jmoropeza
    Nov 7, 2021
  2. rturbett

    Breathability

    rturbett, Oct 13, 2021
    Replies:
    13
    Views:
    34,568
    rturbett
    Nov 1, 2021
  3. flagg

    Bob Oram website - something looks awfully wrong here??

    flagg, Oct 9, 2021
    Replies:
    1
    Views:
    10,509
    Mr Efficiency
    Oct 9, 2021
  4. guzzis3

    Crowther spindrift 48

    guzzis3, Oct 1, 2021 ... 2
    Replies:
    16
    Views:
    10,500
    upchurchmr
    Oct 12, 2021
  5. rael dobkins

    Preparing for sea, Proa physics and a new rudder. Balkan Shipyards

    rael dobkins, Sep 30, 2021
    Replies:
    0
    Views:
    6,879
    rael dobkins
    Sep 30, 2021
  6. Hell_Bent

    In Search of Epicure (design commentary is also welcome)

    Hell_Bent, Sep 22, 2021
    Replies:
    7
    Views:
    7,143
    Hell_Bent
    Sep 29, 2021
  7. Teamscarab

    Siren 8.4 catamaran.

    Teamscarab, Sep 16, 2021
    Replies:
    10
    Views:
    7,257
    guzzis3
    Apr 16, 2024
  8. Amphicat

    Help me design the AmphiCat

    Amphicat, Sep 16, 2021 ... 2 3
    Replies:
    37
    Views:
    9,328
    Amphicat
    Sep 20, 2021
  9. Robert A Walker

    Tri, Tri, Tri

    Robert A Walker, Sep 14, 2021
    Replies:
    2
    Views:
    6,086
    catsketcher
    Sep 14, 2021
  10. jtrosclair

    12 foot trimaran, can someone tell me if this center hull looks about right?

    jtrosclair, Sep 9, 2021
    Replies:
    9
    Views:
    6,349
    guzzis3
    Sep 10, 2021
  11. CardboardKing

    Hobie Cat Lateen Conversion

    CardboardKing, Sep 2, 2021
    Replies:
    11
    Views:
    6,691
    CardboardKing
    Sep 8, 2021
  12. Qmaran

    Is rigidity a religion? Amas on the move....

    Qmaran, Aug 31, 2021 ... 3 4 5
    Replies:
    74
    Views:
    16,169
    gonzo
    Mar 28, 2022
  13. guzzis3

    Glider/L'il Nip weight

    guzzis3, Aug 30, 2021
    Replies:
    10
    Views:
    5,326
    guzzis3
    Sep 9, 2021
  14. rael dobkins

    The next PROA from Balkan Shipyards, the LOGIC behind the DESIGN.

    rael dobkins, Aug 28, 2021
    Replies:
    1
    Views:
    5,227
    redreuben
    Aug 31, 2021
  15. Michael Farmer

    Sailing outrigger canoe

    Michael Farmer, Aug 23, 2021 ... 2
    Replies:
    24
    Views:
    9,342
    Keern Haslem
    Dec 19, 2023
  16. bruceb

    Modern sheet material designs

    bruceb, Aug 6, 2021 ... 2
    Replies:
    28
    Views:
    7,050
    bruceb
    Aug 12, 2021
  17. Iridian

    Cruising Catamaran Righting System

    Iridian, Aug 3, 2021
    Replies:
    4
    Views:
    4,974
    redreuben
    Aug 5, 2021
  18. jmarker1612

    Martingale Design

    jmarker1612, Jul 23, 2021
    Replies:
    3
    Views:
    4,066
    bajansailor
    Jul 24, 2021
  19. Moshe Chocron

    Recently purchased our first boat - 1984 45' Catamaran

    Moshe Chocron, Jul 17, 2021
    Replies:
    11
    Views:
    3,094
    fallguy
    Jul 17, 2021
  20. Burnside Style

    Beach Catamaran Beams from Aluminum to ply/composite?

    Burnside Style, Jul 16, 2021 ... 2 3
    Replies:
    44
    Views:
    8,650
    rxcomposite
    Jul 27, 2021
  21. Scuff

    Self tacking jib options

    Scuff, Jul 13, 2021 ... 2
    Replies:
    17
    Views:
    6,597
    Blueknarr
    Jul 31, 2021
  22. rturbett

    Catamaran beam construction

    rturbett, Jul 11, 2021 ... 2
    Replies:
    21
    Views:
    10,750
    rturbett
    Oct 1, 2021
  23. Gary Bernier

    1981 52' CSK ketch rigged catamaran

    Gary Bernier, Jul 1, 2021
    Replies:
    3
    Views:
    2,939
    LucasH992
    Aug 23, 2023
  24. rturbett

    Shark Restoration

    rturbett, Jun 29, 2021
    Replies:
    4
    Views:
    1,758
    rturbett
    Jun 30, 2021
  25. perry2222

    Shape of a chainplate that might spread load better?

    perry2222, Jun 26, 2021
    Replies:
    13
    Views:
    2,685
    Blueknarr
    Jun 28, 2021
  26. patrik111

    rig fore aft position limits for catamaran

    patrik111, Jun 24, 2021
    Replies:
    12
    Views:
    2,479
    oldmulti
    Jun 25, 2021
  27. Scuff

    Kickup rudder questions

    Scuff, Jun 22, 2021
    Replies:
    9
    Views:
    2,161
    wet feet
    Jun 23, 2021
  28. rael dobkins

    PROA LeePod DESIGN, the different styles....

    rael dobkins, Jun 22, 2021
    Replies:
    0
    Views:
    1,892
    rael dobkins
    Jun 22, 2021
  29. Iridian

    Considering Homebuilding a ~50' Catamaran

    Iridian, Jun 10, 2021 ... 3 4 5
    Replies:
    69
    Views:
    13,790
    Air Tahiti
    Dec 17, 2023
  30. Tom Mark Page

    Crowther 33 Buccaneer

    Tom Mark Page, Jun 9, 2021 ... 2 3
    Replies:
    42
    Views:
    13,301
    bruceb
    Nov 3, 2022
  31. Brian Alsum

    Multihull power requirements

    Brian Alsum, May 27, 2021 ... 2 3
    Replies:
    44
    Views:
    8,959
    Dragontri
    Jul 14, 2021
  32. Paul S Hamilton

    Hull flexing on 49' Norm Cross Tri

    Paul S Hamilton, May 26, 2021
    Replies:
    4
    Views:
    1,864
    Paul S Hamilton
    May 28, 2021
  33. Nordschleife

    AC50/F50 Hull Drawings

    Nordschleife, May 25, 2021
    Replies:
    1
    Views:
    2,179
    oldmulti
    May 25, 2021
  34. Stefano Dilena

    Fiberglass hull construction cost

    Stefano Dilena, May 23, 2021 ... 2 3
    Replies:
    39
    Views:
    6,919
    ondarvr
    May 27, 2021
  35. Nordschleife

    Building a “C-Class” Catamaran

    Nordschleife, May 23, 2021 ... 2 3
    Replies:
    34
    Views:
    5,042
    oldmulti
    Jun 25, 2021
  36. guzzis3

    Solar catamaran

    guzzis3, May 20, 2021 ... 2 3 4
    Replies:
    53
    Views:
    12,729
    dustman
    Jul 31, 2022
  37. Muzammal

    Lack of data about steel multihulls

    Muzammal, May 18, 2021 ... 2 3 4
    Replies:
    46
    Views:
    15,327
    Sand crab
    Jan 27, 2022
  38. Cameron Bartlett

    Farrier TrailerTri 720 Centerboard lamination

    Cameron Bartlett, May 16, 2021
    Replies:
    10
    Views:
    2,100
    Russell Brown
    May 17, 2021
  39. santomas

    Mast corrosion - repair options?

    santomas, May 16, 2021
    Replies:
    11
    Views:
    3,599
    aussiebushman
    Jun 17, 2021
  40. SolGato

    SolGato’s Lateen Crab Claw Rig

    SolGato, May 12, 2021 ... 2
    Replies:
    15
    Views:
    3,057
    SolGato
    May 14, 2021
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