Multihulls

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

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  1. Doug Lord

    Bill Roberts is gone

    Doug Lord, May 9, 2019
    Replies:
    0
    Views:
    754
    Doug Lord
    May 9, 2019
  2. Manfred.pech

    Tamanu

    Manfred.pech, May 11, 2019
    Replies:
    0
    Views:
    753
    Manfred.pech
    May 11, 2019
  3. Tom Mckinney

    Conversion of trapeze dinghy [FD] to trimaran?

    Tom Mckinney, May 11, 2019
    Replies:
    4
    Views:
    783
    Steve Clark
    May 11, 2019
  4. TwoBirds

    Wa'apa outrigger canoe proa/trimaran build

    TwoBirds, Oct 24, 2017
    Replies:
    6
    Views:
    6,914
    Aaron_de
    May 12, 2019
  5. pitbull

    pitching control

    pitbull, Mar 28, 2019 ... 2 3 4
    Replies:
    50
    Views:
    3,492
    Doug Lord
    May 14, 2019
  6. SolGato

    Swing Wing Catamaran Design

    SolGato, May 14, 2019
    Replies:
    4
    Views:
    1,373
    SolGato
    May 15, 2019
  7. Elliot DeYoung

    Cat rudder design help

    Elliot DeYoung, May 15, 2019
    Replies:
    1
    Views:
    626
    SolGato
    May 15, 2019
  8. Doug Lord

    Ultim Foiling Trimarans Schedule and Behind the Scenes

    Doug Lord, Apr 5, 2019
    Replies:
    2
    Views:
    993
    Doug Lord
    May 16, 2019
  9. SolGato

    Rudder positioning powered catamaran

    SolGato, May 13, 2019 ... 2
    Replies:
    17
    Views:
    1,642
    SolGato
    May 16, 2019
  10. Doug Lord

    Ultim: Actual Leader

    Doug Lord, Apr 2, 2019
    Replies:
    2
    Views:
    1,933
    Doug Lord
    May 16, 2019
  11. SolGato

    My next electric catamaran project

    SolGato, May 15, 2019
    Replies:
    8
    Views:
    1,165
    coolmike
    May 17, 2019
  12. Tchamo

    Use foam core and plywood in a catamaran hull

    Tchamo, Apr 7, 2019 ... 2 3
    Replies:
    32
    Views:
    4,822
    trip the light fandango
    May 19, 2019
  13. Doug Lord

    Worrell 1000 May 2019

    Doug Lord, Apr 14, 2019
    Replies:
    7
    Views:
    886
    Doug Lord
    May 19, 2019
  14. SolGato

    Tremolino -mixing old with new

    SolGato, May 17, 2019
    Replies:
    14
    Views:
    2,199
    Corley
    May 19, 2019
  15. Will001

    Trimaran folding system attachment

    Will001, May 13, 2019 ... 2
    Replies:
    26
    Views:
    2,566
    W17 designer
    May 20, 2019
  16. Doug Lord

    GC 32 super cat

    Doug Lord, Oct 15, 2012 ... 15 16 17
    Replies:
    240
    Views:
    52,171
    Doug Lord
    May 23, 2019
  17. Eric Lundy

    Horizontal fin drive trimaran

    Eric Lundy, May 21, 2019
    Replies:
    3
    Views:
    809
    Doug Lord
    May 25, 2019
  18. Doug Lord

    Macif Ultim Trimaran- to be relaunched in July 2018

    Doug Lord, Jun 17, 2018 ... 2
    Replies:
    26
    Views:
    3,287
    Doug Lord
    May 27, 2019
  19. jamez

    Unusual 'foil' stabilised tri

    jamez, Dec 8, 2018 ... 2
    Replies:
    22
    Views:
    2,295
    Angélique
    May 28, 2019
  20. WerpKerp

    RC 1/5 Scale AC50 Foiling Catamaran

    WerpKerp, Apr 29, 2019
    Replies:
    8
    Views:
    4,100
    WerpKerp
    May 29, 2019
  21. buzzman

    45 ft part built tri on craigslist Mass.

    buzzman, Jun 13, 2018 ... 2 3
    Replies:
    44
    Views:
    6,582
    buzzman
    May 30, 2019
  22. Doug Lord

    20' and under trimaran beam-less than square, square or oversquare-and why.

    Doug Lord, May 15, 2019 ... 2
    Replies:
    17
    Views:
    1,836
    patzefran
    Jun 2, 2019
  23. dsigned

    24ft Bluewater cat sketch

    dsigned, Dec 18, 2018 ... 2 3
    Replies:
    34
    Views:
    3,642
    Niclas Vestman
    Jun 4, 2019
  24. Doug Lord

    Flying Phantom F 18 Catamaran

    Doug Lord, Jul 13, 2012 ... 6 7 8
    Replies:
    111
    Views:
    53,706
    Doug Lord
    Jun 4, 2019
  25. magentawave

    Questions about safety of CSK / Polycon Catamarans for cruising

    magentawave, Mar 13, 2019
    Replies:
    8
    Views:
    1,816
    fhrussell
    Jun 5, 2019
  26. Wally2

    Recommend me an angle of attack for outboards on a catamaran

    Wally2, Jun 2, 2019
    Replies:
    9
    Views:
    1,308
    fastsailing
    Jun 9, 2019
  27. Newickspark
    Locked

    New idea for a camping Tri

    Newickspark, Jun 14, 2019
    Replies:
    1
    Views:
    652
    jamez
    Jun 16, 2019
  28. magwas

    Boat designer for a steel origami cat?

    magwas, Jun 17, 2019
    Replies:
    12
    Views:
    1,152
    guzzis3
    Jun 20, 2019
  29. Doug Lord

    T2 Foiling Trimaran

    Doug Lord, May 29, 2019
    Replies:
    6
    Views:
    1,432
    Doug Lord
    Jun 21, 2019
  30. Newickspark
    Locked

    Ljungström Sail

    Newickspark, Jun 16, 2019 ... 2
    Replies:
    28
    Views:
    2,316
    peterbike
    Jun 22, 2019
  31. Newickspark
    Locked

    World crushing-Fast-under 30’ Tri

    Newickspark, Jun 17, 2019 ... 2
    Replies:
    24
    Views:
    2,282
    Doug Lord
    Jun 27, 2019
  32. Corley

    R2ak 2019

    Corley, Jun 3, 2019
    Replies:
    11
    Views:
    1,253
    Corley
    Jun 28, 2019
  33. DennisRB

    Catamaran tender to replace rib?

    DennisRB, Jul 4, 2014 ... 3 4 5
    Replies:
    73
    Views:
    24,929
    Jolly Mon
    Jul 2, 2019
  34. waterbear

    Jarcat 6 verions, modifications etc.

    waterbear, Jun 28, 2019 ... 2
    Replies:
    17
    Views:
    6,380
    guzzis3
    Jul 2, 2019
  35. Coastal Ogre

    Re-tabbing Bulkheads on a Production Catamaran

    Coastal Ogre, Jun 28, 2019
    Replies:
    10
    Views:
    1,725
    Coastal Ogre
    Jul 5, 2019
  36. sailhawaii

    Designing a 43' flat panel performance cruising catamaran

    sailhawaii, Jun 7, 2019
    Replies:
    9
    Views:
    2,859
    sailhawaii
    Jul 9, 2019
  37. revintage

    Second forestay chainplate on A-cat hull

    revintage, Jun 25, 2019 ... 2
    Replies:
    27
    Views:
    1,626
    revintage
    Jul 15, 2019
  38. Vantage475T

    ISO Skiffmaran

    Vantage475T, Dec 23, 2016 ... 2
    Replies:
    25
    Views:
    9,754
    Vantage475T
    Jul 16, 2019
  39. Gary Baigent

    6.5 to 7.5 metre performance/cruise multihulls

    Gary Baigent, Feb 27, 2015 ... 25 26 27
    Replies:
    403
    Views:
    83,756
    Gary Baigent
    Jul 19, 2019
  40. InetRoadkill

    Cockpit location on a tri/pod cat hybrid.

    InetRoadkill, Jul 18, 2019
    Replies:
    2
    Views:
    791
    InetRoadkill
    Jul 19, 2019
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