Multihulls

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

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  1. Boy Griffioen

    D shape or semi oval advances wing systems shape for double mainsail

    Boy Griffioen, Jan 24, 2022 ... 2
    Replies:
    18
    Views:
    6,154
    Erwan
    Feb 25, 2022
  2. BobBill

    More Changes to basic (Malibu) Outrigger...

    BobBill, Feb 25, 2022
    Replies:
    3
    Views:
    3,983
    BobBill
    Feb 26, 2022
  3. waterbear

    Jarcat 6 verions, modifications etc.

    waterbear, Jun 28, 2019 ... 2
    Replies:
    26
    Views:
    19,727
    sailhand
    Feb 27, 2022
  4. zombat

    KLIS trimaran: owners wanted

    zombat, Dec 5, 2019 ... 2 3
    Replies:
    42
    Views:
    14,253
    jamez
    Mar 2, 2022
  5. Flotation

    Bieker B53

    Flotation, Dec 22, 2021
    Replies:
    5
    Views:
    5,899
    redreuben
    Mar 15, 2022
  6. revintage

    Trimaran alignment of hulls with different rocker

    revintage, Mar 1, 2022
    Replies:
    10
    Views:
    4,613
    revintage
    Mar 23, 2022
  7. MrMillard

    Amateur trimaran design critique

    MrMillard, Dec 1, 2021 ... 5 6 7
    Replies:
    98
    Views:
    18,629
    Bobuk25
    Mar 23, 2022
  8. Qmaran

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

    Qmaran, Aug 31, 2021 ... 3 4 5
    Replies:
    74
    Views:
    16,092
    gonzo
    Mar 28, 2022
  9. oldsailor7

    Hedley Nicol Trimaran Plans

    oldsailor7, Mar 12, 2010 ... 31 32 33
    Replies:
    480
    Views:
    142,962
    cavalier mk2
    Apr 4, 2022
  10. rael dobkins

    Proa Self Steering? AD-Scull? Sheet to Tiller? Lets see...

    rael dobkins, Apr 2, 2022
    Replies:
    2
    Views:
    3,721
    rael dobkins
    Apr 4, 2022
  11. Jerry_Lincoln

    Norman Cross Trimaran

    Jerry_Lincoln, Mar 26, 2005 ... 6 7 8
    Replies:
    114
    Views:
    111,182
    Briter
    Apr 6, 2022
  12. DamianW86

    Building 17' wide 14' long deck

    DamianW86, Jan 7, 2022 ... 2
    Replies:
    17
    Views:
    6,376
    redreuben
    Apr 10, 2022
  13. SeaBoat

    Block coefficient of Multihull

    SeaBoat, Apr 11, 2022
    Replies:
    1
    Views:
    3,780
    jehardiman
    Apr 11, 2022
  14. MichaelRoberts

    Laminate or dacron for 60 foot catamaran

    MichaelRoberts, Mar 4, 2022 ... 2
    Replies:
    17
    Views:
    5,798
    Skyak
    Apr 21, 2022
  15. East Coast Sailor

    Easton Catamarans

    East Coast Sailor, May 4, 2022
    Replies:
    0
    Views:
    3,190
    East Coast Sailor
    May 4, 2022
  16. Burnside Style

    Plywood Tornado US21 Hull Repair

    Burnside Style, May 1, 2022
    Replies:
    5
    Views:
    3,015
    Burnside Style
    May 4, 2022
  17. perry2222

    Norewegian Multi hull designers

    perry2222, Mar 20, 2022
    Replies:
    11
    Views:
    4,321
    redreuben
    May 14, 2022
  18. rturbett

    Okume ply decks- to glass or not to glass

    rturbett, May 13, 2022
    Replies:
    6
    Views:
    2,596
    rturbett
    May 14, 2022
  19. member 76956

    Shunting Catamaran?

    member 76956, May 15, 2022
    Replies:
    4
    Views:
    2,674
    member 76956
    May 16, 2022
  20. Owly

    bridge deck streamlining greenhouse effect

    Owly, May 19, 2022
    Replies:
    1
    Views:
    2,134
    BlueBell
    May 20, 2022
  21. member 76956

    Sampan Lee Hull?

    member 76956, May 20, 2022
    Replies:
    10
    Views:
    2,812
    AlanX
    May 23, 2022
  22. lucdekeyser

    60+' custom Harryproa cruiser "Kleen Breeze" first trials

    lucdekeyser, Aug 4, 2017 ... 2
    Replies:
    26
    Views:
    15,814
    fallguy
    May 26, 2022
  23. PerthMini40man

    Foiling radio control trimarans

    PerthMini40man, Jun 9, 2016 ... 11 12 13
    Replies:
    189
    Views:
    37,418
    Flotation
    Jun 7, 2022
  24. member 76956

    Rectangular Tubing for Yacht Design?

    member 76956, May 21, 2022
    Replies:
    12
    Views:
    3,055
    rberrey
    Jun 9, 2022
  25. BMP

    Cat or Tri with Lee Pod

    BMP, Jun 15, 2022
    Replies:
    5
    Views:
    1,748
    BMP
    Jun 15, 2022
  26. BMP

    L/B ratios the same for short and long hulls?

    BMP, Jun 15, 2022
    Replies:
    13
    Views:
    2,416
    fallguy
    Jun 19, 2022
  27. Finby

    Radical Bay style Bipod but with jibs only?

    Finby, Jun 3, 2022
    Replies:
    9
    Views:
    3,609
    Finby
    Jun 21, 2022
  28. Islander63

    (strip)planking a Wharram TEHINI ?

    Islander63, Jun 15, 2022 ... 2 3 4
    Replies:
    46
    Views:
    6,217
    Islander63
    Jun 29, 2022
  29. tamkvaitis

    Tornado hull modifications

    tamkvaitis, Nov 28, 2012
    Replies:
    6
    Views:
    6,920
    Martin Goodman
    Jul 10, 2022
  30. BMP

    Semi submarine hull Te Puke

    BMP, Jul 7, 2022
    Replies:
    12
    Views:
    1,867
    BMP
    Jul 10, 2022
  31. rturbett

    Glassing the decks- any preference?

    rturbett, Jun 14, 2022 ... 2
    Replies:
    15
    Views:
    2,692
    rturbett
    Jul 30, 2022
  32. guzzis3

    Solar catamaran

    guzzis3, May 20, 2021 ... 2 3 4
    Replies:
    53
    Views:
    12,669
    dustman
    Jul 31, 2022
  33. tpchuckles

    super cheap, simple, dirty: kayak > trimaran

    tpchuckles, Jul 27, 2022
    Replies:
    10
    Views:
    3,361
    rnlock
    Aug 4, 2022
  34. RampantMule

    SAN-PVC-PET foam core

    RampantMule, Nov 6, 2021 ... 2
    Replies:
    20
    Views:
    9,484
    guzzis3
    Aug 6, 2022
  35. Russell Brown

    Jzerro is about to round Cape Horn

    Russell Brown, Mar 15, 2022
    Replies:
    8
    Views:
    4,680
    ImaginaryNumber
    Aug 12, 2022
  36. Russell Brown

    Strip-planking thickness for trimaran

    Russell Brown, Jul 28, 2022
    Replies:
    12
    Views:
    2,642
    Richard_F
    Aug 25, 2022
  37. fallguy

    Woods Skoota Jig Available

    fallguy, Aug 29, 2022
    Replies:
    0
    Views:
    918
    fallguy
    Aug 29, 2022
  38. seandepagnier

    rudder design - gudgeon size

    seandepagnier, Mar 20, 2022
    Replies:
    12
    Views:
    4,207
    seandepagnier
    Sep 7, 2022
  39. brian eiland

    Peter Spronk Catamarans

    brian eiland, Mar 25, 2015
    Replies:
    8
    Views:
    11,076
    redreuben
    Sep 8, 2022
  40. revintage

    Triple tube sliding beam

    revintage, Aug 22, 2022
    Replies:
    12
    Views:
    2,085
    waynemarlow
    Sep 9, 2022
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