Multihulls

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

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  1. revintage

    Trimaran alignment of hulls with different rocker

    revintage, Mar 1, 2022
    Replies:
    10
    Views:
    3,514
    revintage
    Mar 23, 2022
  2. Flotation

    Bieker B53

    Flotation, Dec 22, 2021
    Replies:
    5
    Views:
    5,201
    redreuben
    Mar 15, 2022
  3. zombat

    KLIS trimaran: owners wanted

    zombat, Dec 5, 2019 ... 2 3
    Replies:
    42
    Views:
    10,583
    jamez
    Mar 2, 2022
  4. waterbear

    Jarcat 6 verions, modifications etc.

    waterbear, Jun 28, 2019 ... 2
    Replies:
    26
    Views:
    13,809
    sailhand
    Feb 27, 2022
  5. BobBill

    More Changes to basic (Malibu) Outrigger...

    BobBill, Feb 25, 2022
    Replies:
    3
    Views:
    3,202
    BobBill
    Feb 26, 2022
  6. Boy Griffioen

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

    Boy Griffioen, Jan 24, 2022 ... 2
    Replies:
    18
    Views:
    4,770
    Erwan
    Feb 25, 2022
  7. revintage

    Single water stay attachment for both beams

    revintage, Feb 22, 2022
    Replies:
    0
    Views:
    3,091
    revintage
    Feb 22, 2022
  8. terryI

    1977 26' simpson-wild trimaran

    terryI, Jan 7, 2008 ... 2 3 4
    Replies:
    46
    Views:
    29,773
    David Walsh
    Feb 22, 2022
  9. Geno41

    Cat Design comparo question

    Geno41, Jul 28, 2017 ... 2
    Replies:
    25
    Views:
    9,377
    supervisit
    Feb 21, 2022
  10. revintage

    Small trimaran with Tornado centerhull

    revintage, Dec 25, 2021 ... 2 3
    Replies:
    32
    Views:
    7,306
    revintage
    Feb 14, 2022
  11. Scuff

    Kickup rudder critique

    Scuff, Nov 8, 2021 ... 2 3
    Replies:
    31
    Views:
    7,502
    freddyj
    Feb 14, 2022
  12. perry2222

    Dagger board control lines

    perry2222, Feb 12, 2022
    Replies:
    2
    Views:
    3,385
    perry2222
    Feb 13, 2022
  13. rturbett

    First try at making a Shark mould!

    rturbett, Jan 31, 2022
    Replies:
    3
    Views:
    3,809
    rturbett
    Feb 10, 2022
  14. Philippe Lapere

    Advice on 20ft beachcat design and build

    Philippe Lapere, Apr 29, 2021 ... 2 3 4
    Replies:
    52
    Views:
    15,575
    Windward 54
    Feb 5, 2022
  15. rturbett

    Deconstructive testing!

    rturbett, Jan 31, 2022
    Replies:
    5
    Views:
    3,723
    rturbett
    Feb 1, 2022
  16. Corley

    Lock Crowther 1962 Kraken 25 trimaran build and rebuild log

    Corley, Jun 7, 2011 ... 12 13 14
    Replies:
    203
    Views:
    51,111
    revintage
    Feb 1, 2022
  17. revintage

    Windknife trifoiler build

    revintage, Dec 7, 2018 ... 2 3 4
    Replies:
    48
    Views:
    12,039
    revintage
    Jan 29, 2022
  18. Muzammal

    Lack of data about steel multihulls

    Muzammal, May 18, 2021 ... 2 3 4
    Replies:
    46
    Views:
    11,772
    Sand crab
    Jan 27, 2022
  19. MichaelRoberts

    Epoxy water lock for wet exhaust

    MichaelRoberts, Jan 15, 2022 ... 2 3
    Replies:
    33
    Views:
    4,784
    MichaelRoberts
    Jan 27, 2022
  20. rob denney

    Foiler 50

    rob denney, Jan 21, 2022
    Replies:
    1
    Views:
    4,020
    lucdekeyser
    Jan 25, 2022
  21. Iridian

    Catamaran Transport Methods

    Iridian, Dec 19, 2021 ... 2
    Replies:
    25
    Views:
    5,883
    gonzo
    Jan 22, 2022
  22. peteyak

    Rudder mount design for small outrigger

    peteyak, Jan 11, 2022
    Replies:
    13
    Views:
    4,530
    revintage
    Jan 19, 2022
  23. Lachie

    Life is too short to fair above the waterline

    Lachie, Mar 19, 2021 ... 2 3 4
    Replies:
    49
    Views:
    12,878
    rael dobkins
    Jan 14, 2022
  24. PeculiarBob

    Mike Waller yacht design opinions?

    PeculiarBob, Dec 16, 2021 ... 2
    Replies:
    21
    Views:
    6,477
    jamez
    Jan 11, 2022
  25. Paul Scott

    Frankenboat questions

    Paul Scott, Jan 3, 2022
    Replies:
    0
    Views:
    4,271
    Paul Scott
    Jan 3, 2022
  26. sun

    Is there an estimation formula for calculating wave force of different marine structures？

    sun, Dec 27, 2021
    Replies:
    11
    Views:
    4,726
    jehardiman
    Jan 3, 2022
  27. Manfred.pech

    ...to smash all records

    Manfred.pech, Jan 1, 2022
    Replies:
    9
    Views:
    4,574
    jehardiman
    Jan 1, 2022
  28. guzzis3

    Sydney to Hobart multihulls

    guzzis3, Dec 27, 2021 ... 2
    Replies:
    18
    Views:
    5,626
    redreuben
    Jan 1, 2022
  29. Kuter

    Tri with central hull smaller than side hulls

    Kuter, Dec 23, 2021
    Replies:
    8
    Views:
    4,937
    rxcomposite
    Dec 24, 2021
  30. redreuben

    Vale James Wharram

    redreuben, Dec 18, 2021
    Replies:
    3
    Views:
    4,883
    jamez
    Dec 18, 2021
  31. Doug Lord

    High Performance MPX Foil/Self-righting Trimaran-The Test Model

    Doug Lord, Dec 28, 2010 ... 198 199 200
    Replies:
    2,990
    Views:
    690,645
    DogCavalry
    Dec 17, 2021
  32. Roni

    Resistance prediction methods/series for catamarans

    Roni, Jul 8, 2020 ... 2
    Replies:
    20
    Views:
    7,738
    Ad Hoc
    Dec 12, 2021
  33. DamianW86

    looking for spreaders reynolds 33 spar

    DamianW86, Dec 8, 2021
    Replies:
    1
    Views:
    4,680
    SolGato
    Dec 9, 2021
  34. rael dobkins

    ROUGH sea PROA Cruising, SHUNTING is the FUTURE... Balkan Shipyards

    rael dobkins, Nov 24, 2021
    Replies:
    8
    Views:
    5,752
    rael dobkins
    Dec 8, 2021
  35. ChrisVJ

    Pre bent masts

    ChrisVJ, Nov 29, 2021
    Replies:
    13
    Views:
    5,622
    Blueknarr
    Dec 6, 2021
  36. Manfred.pech

    French Trimaran

    Manfred.pech, Nov 25, 2021
    Replies:
    5
    Views:
    5,587
    redreuben
    Nov 26, 2021
  37. Dolfiman

    Ultims are back in 2021

    Dolfiman, May 7, 2021 ... 2
    Replies:
    26
    Views:
    11,033
    Dolfiman
    Nov 24, 2021
  38. jmoropeza

    Newbie asking for advice

    jmoropeza, Oct 17, 2021 ... 2 3 4
    Replies:
    53
    Views:
    13,324
    jmoropeza
    Nov 7, 2021
  39. rturbett

    Breathability

    rturbett, Oct 13, 2021
    Replies:
    13
    Views:
    33,945
    rturbett
    Nov 1, 2021
  40. oldsailor7

    Buccaneer 24 Builders Forum

    oldsailor7, Jul 22, 2009 ... 192 193 194
    Replies:
    2,897
    Views:
    618,313
    buzzman
    Nov 1, 2021
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