Multihulls

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

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  1. Burnside Style

    Beach Catamaran Beams from Aluminum to ply/composite?

    Burnside Style, Jul 16, 2021 ... 2 3
    Replies:
    44
    Views:
    8,709
    rxcomposite
    Jul 27, 2021
  2. jmarker1612

    Martingale Design

    jmarker1612, Jul 23, 2021
    Replies:
    3
    Views:
    4,082
    bajansailor
    Jul 24, 2021
  3. DennisRB

    Catamaran tender to replace rib?

    DennisRB, Jul 4, 2014 ... 3 4 5
    Replies:
    74
    Views:
    44,728
    EDWARD GARCIA
    Jul 21, 2021
  4. Moshe Chocron

    Recently purchased our first boat - 1984 45' Catamaran

    Moshe Chocron, Jul 17, 2021
    Replies:
    11
    Views:
    3,114
    fallguy
    Jul 17, 2021
  5. Gunnar Sommerlund

    SeaRider 360 (Need help with Rigging)

    Gunnar Sommerlund, May 24, 2020 ... 2
    Replies:
    20
    Views:
    6,332
    SolGato
    Jul 14, 2021
  6. Brian Alsum

    Multihull power requirements

    Brian Alsum, May 27, 2021 ... 2 3
    Replies:
    44
    Views:
    9,028
    Dragontri
    Jul 14, 2021
  7. bjn

    Why do multihulls have pointy bows?

    bjn, Jan 22, 2017 ... 6 7 8
    Replies:
    115
    Views:
    23,883
    Iridian
    Jul 11, 2021
  8. rob denney

    Replacing outboard motors with sail in the Marshall islands

    rob denney, Feb 22, 2020 ... 2
    Replies:
    21
    Views:
    5,531
    rob denney
    Jul 10, 2021
  9. Boatguy30

    Catamaran Single Engine One Hull

    Boatguy30, Jul 20, 2012 ... 2 3
    Replies:
    44
    Views:
    23,785
    buzzman
    Jul 1, 2021
  10. Chris71

    Where do I start? Build a Trimaran from an Australian Surf Boat and Hobiecat

    Chris71, Mar 11, 2021 ... 2
    Replies:
    17
    Views:
    6,012
    buzzman
    Jun 30, 2021
  11. rturbett

    Shark Restoration

    rturbett, Jun 29, 2021
    Replies:
    4
    Views:
    1,774
    rturbett
    Jun 30, 2021
  12. perry2222

    Shape of a chainplate that might spread load better?

    perry2222, Jun 26, 2021
    Replies:
    13
    Views:
    2,711
    Blueknarr
    Jun 28, 2021
  13. patrik111

    rig fore aft position limits for catamaran

    patrik111, Jun 24, 2021
    Replies:
    12
    Views:
    2,524
    oldmulti
    Jun 25, 2021
  14. Nordschleife

    Building a “C-Class” Catamaran

    Nordschleife, May 23, 2021 ... 2 3
    Replies:
    34
    Views:
    5,101
    oldmulti
    Jun 25, 2021
  15. Scuff

    Kickup rudder questions

    Scuff, Jun 22, 2021
    Replies:
    9
    Views:
    2,187
    wet feet
    Jun 23, 2021
  16. rael dobkins

    PROA LeePod DESIGN, the different styles....

    rael dobkins, Jun 22, 2021
    Replies:
    0
    Views:
    1,908
    rael dobkins
    Jun 22, 2021
  17. santomas

    Mast corrosion - repair options?

    santomas, May 16, 2021
    Replies:
    11
    Views:
    3,660
    aussiebushman
    Jun 17, 2021
  18. Tom Makes Things

    Non-foiling trimarans under 20'

    Tom Makes Things, Sep 25, 2019 ... 4 5 6
    Replies:
    79
    Views:
    19,645
    kleppar
    Jun 10, 2021
  19. NewSalt

    Proa Shunting in Heavy Weather

    NewSalt, May 3, 2021 ... 2 3 4
    Replies:
    59
    Views:
    9,969
    rob denney
    Jun 7, 2021
  20. CatBuilder

    Single Dagger Board vs Double Boards

    CatBuilder, Apr 26, 2011 ... 5 6 7
    Replies:
    91
    Views:
    23,988
    DennisRB
    May 31, 2021
  21. Paul S Hamilton

    Hull flexing on 49' Norm Cross Tri

    Paul S Hamilton, May 26, 2021
    Replies:
    4
    Views:
    1,877
    Paul S Hamilton
    May 28, 2021
  22. Stefano Dilena

    Fiberglass hull construction cost

    Stefano Dilena, May 23, 2021 ... 2 3
    Replies:
    39
    Views:
    7,055
    ondarvr
    May 27, 2021
  23. Donnavan Wright

    Aluminium sailing catamaran build

    Donnavan Wright, Sep 9, 2019 ... 2
    Replies:
    26
    Views:
    14,583
    waterbear
    May 27, 2021
  24. Nordschleife

    AC50/F50 Hull Drawings

    Nordschleife, May 25, 2021
    Replies:
    1
    Views:
    2,222
    oldmulti
    May 25, 2021
  25. Doug Lord

    Banque Populaire XI

    Doug Lord, Dec 20, 2019
    Replies:
    6
    Views:
    2,363
    DogCavalry
    May 20, 2021
  26. Cameron Bartlett

    Farrier TrailerTri 720 Centerboard lamination

    Cameron Bartlett, May 16, 2021
    Replies:
    10
    Views:
    2,126
    Russell Brown
    May 17, 2021
  27. SolGato

    SolGato’s Lateen Crab Claw Rig

    SolGato, May 12, 2021 ... 2
    Replies:
    15
    Views:
    3,101
    SolGato
    May 14, 2021
  28. valery gaulin

    Waller Coral Cove 31

    valery gaulin, Apr 23, 2017
    Replies:
    5
    Views:
    3,500
    guzzis3
    May 11, 2021
  29. seandepagnier

    making a daggerboard longer

    seandepagnier, May 7, 2021
    Replies:
    8
    Views:
    1,495
    catsketcher
    May 11, 2021
  30. Doug Lord

    Kite Foiler

    Doug Lord, Apr 22, 2021
    Replies:
    11
    Views:
    1,936
    Skyak
    Apr 26, 2021
  31. Doug Lord

    New Trimaran Foilers

    Doug Lord, Jun 8, 2016 ... 17 18 19
    Replies:
    276
    Views:
    53,450
    Vantage475T
    Apr 26, 2021
  32. Skyak

    Sail GP live on YT

    Skyak, Apr 25, 2021
    Replies:
    1
    Views:
    1,047
    Skyak
    Apr 25, 2021
  33. Charlyipad

    best way to stiffen a bridgedeck?

    Charlyipad, Apr 22, 2021
    Replies:
    11
    Views:
    1,970
    Charlyipad
    Apr 25, 2021
  34. dustman

    How big would a catamaran have to be...?

    dustman, Apr 23, 2021
    Replies:
    12
    Views:
    2,340
    comfisherman
    Apr 25, 2021
  35. Muzammal

    Building 44' wooden tri with traditional planking

    Muzammal, Apr 19, 2021 ... 2
    Replies:
    20
    Views:
    3,812
    Dejay
    Apr 24, 2021
  36. Gary Curtis

    Query carbon rudder box layup and repair

    Gary Curtis, Apr 5, 2021
    Replies:
    2
    Views:
    1,459
    Ganzi
    Apr 24, 2021
  37. Owly

    Design Spiral into Madness

    Owly, Apr 15, 2021 ... 2
    Replies:
    20
    Views:
    3,032
    guzzis3
    Apr 18, 2021
  38. JunkRat

    What’s formula for estimating catamaran speed? Speed from length better than from design?

    JunkRat, Oct 31, 2020
    Replies:
    10
    Views:
    4,528
    Dolfiman
    Apr 18, 2021
  39. JunkRat

    Seeking Tradewind route Statistical Data

    JunkRat, Apr 16, 2021
    Replies:
    7
    Views:
    1,388
    CocoonCruisers
    Apr 17, 2021
  40. Lachie

    Hard v round bilge and leeway

    Lachie, Mar 23, 2021
    Replies:
    9
    Views:
    2,254
    guzzis3
    Apr 14, 2021
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