Multihulls

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

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  1. Crashed

    Any buoyancy mathematician's around ?

    Crashed, Aug 6, 2020 ... 2
    Replies:
    29
    Views:
    2,541
    Rumars
    Aug 7, 2020
  2. waynemarlow

    Max lift on symetric foils at 6 degrees inclination

    waynemarlow, Jul 25, 2020
    Replies:
    1
    Views:
    1,147
    waynemarlow
    Jul 25, 2020
  3. Roni

    Using aluminiun masts sections as tranverse structure instead of bulkheads

    Roni, Jul 20, 2020 ... 2
    Replies:
    29
    Views:
    2,871
    Roni
    Jul 24, 2020
  4. Dolfiman

    Ultims are back, for the Dhream Cup july 19

    Dolfiman, Jul 17, 2020
    Replies:
    11
    Views:
    1,684
    Dolfiman
    Jul 22, 2020
  5. Capt Ridder

    Looking for good resolution images of a Kurt Hughes 65' Cat

    Capt Ridder, Jul 9, 2020
    Replies:
    4
    Views:
    1,889
    Capt Ridder
    Jul 13, 2020
  6. outside the box

    Buccaneer 24, Buccaneer 28 and now Buccaneer 33 plans are also now to be available.

    outside the box, Jan 21, 2015 ... 7 8 9
    Replies:
    121
    Views:
    38,253
    oldmulti
    Jul 10, 2020
  7. Nico Crispi

    Unstayed carbon fiber mast on cruising catamaran?

    Nico Crispi, Jul 15, 2017 ... 3 4 5
    Replies:
    61
    Views:
    14,056
    brian eiland
    Jul 8, 2020
  8. cutawaycafe

    Biplane rigs

    cutawaycafe, May 15, 2013 ... 4 5 6
    Replies:
    85
    Views:
    37,647
    brian eiland
    Jul 8, 2020
  9. Doug Lord

    Mothquito with "Increased Foiling System"

    Doug Lord, Feb 19, 2018 ... 2
    Replies:
    20
    Views:
    4,995
    Doug Lord
    Jul 7, 2020
  10. John Perry

    AYRS meeting - Bernard Rhodes - Trimaran design, build and voyaging

    John Perry, May 29, 2020
    Replies:
    6
    Views:
    2,604
    zombat
    Jul 2, 2020
  11. Xpert

    Affordable 9m Catamaran

    Xpert, Jun 23, 2020 ... 2 3
    Replies:
    35
    Views:
    7,206
    bajansailor
    Jul 1, 2020
  12. TomBlake

    Extend Rudders on 10metre sailing catamaran

    TomBlake, Jun 10, 2020 ... 2
    Replies:
    26
    Views:
    4,624
    nwguy
    Jun 30, 2020
  13. TomBlake

    Pivot construction for catamaran kick-up rudders

    TomBlake, Jun 28, 2020
    Replies:
    11
    Views:
    2,027
    redreuben
    Jun 30, 2020
  14. Chotu

    Shopping For Used Masts, How Close is Close Enough ?

    Chotu, Jun 27, 2020
    Replies:
    11
    Views:
    2,310
    Tom.151
    Jun 29, 2020
  15. rturbett

    Gasket material / source

    rturbett, Jun 16, 2020
    Replies:
    1
    Views:
    1,083
    rturbett
    Jun 25, 2020
  16. Dolfiman

    Brest Atlantiques 2019 - Ultims

    Dolfiman, Oct 31, 2019 ... 3 4 5
    Replies:
    63
    Views:
    5,769
    Dronerz
    Jun 21, 2020
  17. Builder45

    Multihull compression post base

    Builder45, Jul 22, 2019
    Replies:
    8
    Views:
    3,464
    brian eiland
    Jun 21, 2020
  18. Kym Bouckaert

    Triwanderer Hedley Nicol

    Kym Bouckaert, Jun 3, 2019
    Replies:
    6
    Views:
    2,004
    RJW Adelaide
    Jun 15, 2020
  19. waynemarlow

    Cutting a mast slot

    waynemarlow, Jun 14, 2020
    Replies:
    1
    Views:
    1,159
    Russell Brown
    Jun 14, 2020
  20. rael dobkins

    Sea Trials and a cruise, Proa WHY NOT? Junk Rigged, very pleased...

    rael dobkins, Jun 13, 2020
    Replies:
    0
    Views:
    1,416
    rael dobkins
    Jun 13, 2020
  21. Chotu

    Can Anyone Explain the Forces on a Longeron?

    Chotu, Jun 4, 2020
    Replies:
    5
    Views:
    3,575
    Chotu
    Jun 11, 2020
  22. rael dobkins

    How Junk Rigs Work, and why they are BETTER than RM

    rael dobkins, Jun 3, 2020
    Replies:
    6
    Views:
    2,757
    rael dobkins
    Jun 5, 2020
  23. pitbull

    crossbeam flexibility

    pitbull, May 30, 2020
    Replies:
    9
    Views:
    2,227
    Ad Hoc
    Jun 2, 2020
  24. rturbett

    Epoxy in the sun...

    rturbett, May 24, 2020
    Replies:
    4
    Views:
    1,369
    Yobarnacle
    May 25, 2020
  25. Nordschleife

    A-Class Catamaran Plans?

    Nordschleife, Jan 5, 2020 ... 2
    Replies:
    19
    Views:
    6,281
    Manfred.pech
    May 18, 2020
  26. Fanie

    Boxy Fisher Catamaran

    Fanie, Mar 11, 2009 ... 16 17 18
    Replies:
    266
    Views:
    66,899
    hoytedow
    May 12, 2020
  27. rturbett

    epoxy clear coat question

    rturbett, May 11, 2020
    Replies:
    8
    Views:
    1,505
    rturbett
    May 12, 2020
  28. Squidly-Diddly

    how come no multihull toy RC sail boats?

    Squidly-Diddly, Mar 22, 2020 ... 2
    Replies:
    21
    Views:
    3,847
    rturbett
    May 11, 2020
  29. redreuben

    Ever wondered why you SHOULD build a boat

    redreuben, Apr 29, 2020
    Replies:
    5
    Views:
    1,915
    YoungGrumpy
    May 11, 2020
  30. nwguy

    Self tacking jib system question

    nwguy, Apr 24, 2020
    Replies:
    14
    Views:
    4,265
    revintage
    Apr 27, 2020
  31. Bigfork

    What to do with my parts

    Bigfork, Feb 26, 2020
    Replies:
    9
    Views:
    1,751
    BlueBell
    Apr 26, 2020
  32. Bruce Woods

    Rob Dennys' unstayed masts

    Bruce Woods, Feb 4, 2020 ... 2
    Replies:
    15
    Views:
    5,435
    rob denney
    Apr 23, 2020
  33. MCourtney

    Bow and stern extensions on a 16m Catamaran

    MCourtney, Apr 20, 2020
    Replies:
    6
    Views:
    2,976
    MCourtney
    Apr 21, 2020
  34. oldsailor7

    Lock Crowther Biography

    oldsailor7, Nov 20, 2009 ... 2 3 4
    Replies:
    58
    Views:
    35,128
    David Walsh
    Apr 17, 2020
  35. nwguy

    Aka attachments to Nacra 5.2 hulls as amas

    nwguy, Oct 28, 2019 ... 2 3 4
    Replies:
    53
    Views:
    7,719
    upchurchmr
    Apr 14, 2020
  36. trip the light fandango

    Extra floatation to avoid full capsize

    trip the light fandango, Oct 9, 2019 ... 2 3 4
    Replies:
    57
    Views:
    7,649
    Doug Halsey
    Apr 14, 2020
  37. Doug Lord

    Eagle Class 53 Catamaran Foiler

    Doug Lord, Jul 26, 2018
    Replies:
    8
    Views:
    4,084
    brian eiland
    Apr 13, 2020
  38. Doug Lord

    Hybrid wing sail-used by Randy Smyth to win Everglades Challenge

    Doug Lord, Nov 28, 2017
    Replies:
    13
    Views:
    9,191
    brian eiland
    Apr 12, 2020
  39. Snowbank

    Outboard Catamaran Design

    Snowbank, Apr 11, 2020
    Replies:
    6
    Views:
    2,557
    Mr Efficiency
    Apr 11, 2020
  40. BlockHead

    Why Is 'My Hull' So Heavy?

    BlockHead, Apr 7, 2020
    Replies:
    13
    Views:
    2,217
    BlockHead
    Apr 11, 2020
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