Multihulls

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

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  1. kistinie

    BIO refit on Crowther Twiggy

    kistinie, Aug 18, 2007
    Replies:
    8
    Views:
    10,675
    Gary Baigent
    Oct 6, 2011
  2. Doug Lord

    Bill Roberts is gone

    Doug Lord, May 9, 2019
    Replies:
    0
    Views:
    1,459
    Doug Lord
    May 9, 2019
  3. billharrison86

    Bill Kristofferson's Kismet

    billharrison86, Jun 5, 2011
    Replies:
    4
    Views:
    4,172
    redreuben
    Feb 24, 2015
  4. will9000

    Biggest Catamaran ?

    will9000, Nov 8, 2010
    Replies:
    6
    Views:
    2,769
    RHP
    Nov 11, 2010
  5. joeysranger1

    Big Steel Tri

    joeysranger1, Jan 24, 2007
    Replies:
    3
    Views:
    2,884
    la cage
    Mar 11, 2007
  6. Guillermo

    Big one

    Guillermo, Apr 9, 2008
    Replies:
    2
    Views:
    2,679
    Iuridrozd
    Apr 15, 2008
  7. RHough

    Big MAC Cat or Tri?

    RHough, Apr 21, 2006
    Replies:
    5
    Views:
    4,097
    marshmat
    Apr 22, 2006
  8. Big Canoe

    Big Canoe Trimaran.

    Big Canoe, May 27, 2006
    Replies:
    5
    Views:
    8,290
    Big Canoe
    May 28, 2006
  9. Doug Lord

    Bieker Designed Fujin Capsizes

    Doug Lord, Feb 20, 2018
    Replies:
    0
    Views:
    2,076
    Doug Lord
    Feb 20, 2018
  10. Flotation

    Bieker B53

    Flotation, Dec 22, 2021
    Replies:
    5
    Views:
    5,904
    redreuben
    Mar 15, 2022
  11. Boatguy30

    Bieker 24' Proa and other equilivents

    Boatguy30, May 4, 2015
    Replies:
    14
    Views:
    6,487
    Gary Baigent
    May 28, 2015
  12. Nordic Cat

    Bi-rig performance cruiser

    Nordic Cat, Apr 17, 2008 ... 2 3
    Replies:
    33
    Views:
    12,238
    brian eiland
    Dec 31, 2009
  13. Becaris

    Bi-Plane rig on a 20m cat

    Becaris, Jun 28, 2010 ... 3 4 5
    Replies:
    71
    Views:
    26,120
    scape
    Mar 8, 2014
  14. JPh

    Bi-plane catamaran

    JPh, Sep 7, 2003
    Replies:
    5
    Views:
    10,295
    OldYachtie
    Sep 15, 2006
  15. bad dog

    Beware The Bullets Regatta Invitation

    bad dog, Sep 16, 2012
    Replies:
    3
    Views:
    1,680
    Corley
    Oct 8, 2012
  16. vadim_go

    Better boat

    vadim_go, Jan 11, 2012
    Replies:
    10
    Views:
    2,840
    Tim B
    Jan 14, 2012
  17. Charlyipad

    best way to stiffen a bridgedeck?

    Charlyipad, Apr 22, 2021
    Replies:
    11
    Views:
    1,922
    Charlyipad
    Apr 25, 2021
  18. JosephT

    Best trailerable catamaran

    JosephT, Jul 10, 2013 ... 2
    Replies:
    20
    Views:
    11,948
    JosephT
    Jul 15, 2013
  19. DHMzip

    Best software for designing Cats

    DHMzip, Jul 26, 2010
    Replies:
    1
    Views:
    2,274
    raw
    Jul 26, 2010
  20. frank smith

    Best simple 30' cruising cat

    frank smith, Feb 15, 2011 ... 2
    Replies:
    19
    Views:
    13,354
    John1234
    Oct 14, 2011
  21. Alex.A

    Best shape for bridgedeck?

    Alex.A, Mar 19, 2010
    Replies:
    8
    Views:
    3,157
    Alex.A
    Mar 31, 2010
  22. rapscallion

    best rudder foil section for a catamaran

    rapscallion, Apr 24, 2012 ... 2
    Replies:
    18
    Views:
    9,117
    Silver Raven
    May 13, 2012
  23. randy quimpo

    Best rig for small catamaran circumnavigator?

    randy quimpo, Jan 23, 2006 ... 10 11 12
    Replies:
    168
    Views:
    87,612
    BigCat
    Oct 2, 2008
  24. BananaMan777

    Best resources for learning boat design (Planing hulls)

    BananaMan777, Mar 4, 2023
    Replies:
    10
    Views:
    1,533
    bajansailor
    Mar 4, 2023
  25. skipper_rj

    Best propeller

    skipper_rj, Apr 15, 2008
    Replies:
    4
    Views:
    2,805
    zeroname
    Nov 17, 2008
  26. waynemarlow

    Best prop depth for outboard

    waynemarlow, Apr 8, 2016
    Replies:
    2
    Views:
    2,368
    waynemarlow
    Apr 9, 2016
  27. Guest1578132542

    best possible steering

    Guest1578132542, Jul 13, 2010 ... 2
    Replies:
    15
    Views:
    6,173
    Guest1578132542
    Jul 19, 2010
  28. Swift

    Best motor system for a racing tri?

    Swift, Jan 2, 2021
    Replies:
    4
    Views:
    1,464
    Swift
    Jan 3, 2021
  29. nwguy

    Best Guess - A 20 foot home built tri

    nwguy, Sep 2, 2014
    Replies:
    4
    Views:
    2,845
    Corley
    Sep 5, 2014
  30. waynemarlow

    Best free photo storage for the forum

    waynemarlow, Apr 29, 2018
    Replies:
    6
    Views:
    2,501
    Boat Design Net Moderator
    Apr 30, 2018
  31. Jp de B

    Best free CAD for trimaran design

    Jp de B, Sep 8, 2023
    Replies:
    2
    Views:
    1,074
    Jp de B
    Sep 8, 2023
  32. Carlazzomark

    Best cuts for pontoon decking

    Carlazzomark, Jun 30, 2013
    Replies:
    4
    Views:
    4,376
    proagenesis
    Jul 2, 2013
  33. Becaris

    Best Cat Cruiser balancing comfort with function.

    Becaris, Jul 2, 2010 ... 2 3
    Replies:
    37
    Views:
    12,241
    BigCat
    Aug 21, 2010
  34. shadowtill

    Best Build Your Own Trailer Friendly Multihull? Now that Farrier is N/A

    shadowtill, Jul 13, 2013 ... 2
    Replies:
    16
    Views:
    6,312
    Corley
    Apr 25, 2014
  35. Lineman

    Berserk C12R

    Lineman, Jul 2, 2009
    Replies:
    6
    Views:
    1,975
    Lineman
    Jul 3, 2009
  36. zigzag

    Bernie Rodriguez LC 32

    zigzag, Mar 7, 2009
    Replies:
    5
    Views:
    3,144
    rfin
    Jun 25, 2023
  37. captainsideburn

    Bermuda Multihull race videos

    captainsideburn, Feb 26, 2011
    Replies:
    2
    Views:
    1,877
    Corley
    Feb 26, 2011
  38. Jeremy Perkins

    Beginning: Hull shape and size

    Jeremy Perkins, Feb 12, 2024
    Replies:
    11
    Views:
    1,056
    BlueBell
    Feb 18, 2024
  39. paxfish

    Bedding parts to mast section...

    paxfish, Jan 20, 2016
    Replies:
    10
    Views:
    2,550
    paxfish
    Mar 4, 2016
  40. sail

    beam/sleeve for demountable CAT

    sail, Oct 11, 2009
    Replies:
    13
    Views:
    2,880
    Chris Ostlind
    Oct 13, 2009
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