Multihulls

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

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  1. waynemarlow

    Max lift on symetric foils at 6 degrees inclination

    waynemarlow, Jul 25, 2020
    Replies:
    1
    Views:
    1,143
    waynemarlow
    Jul 25, 2020
  2. Roni

    Using aluminiun masts sections as tranverse structure instead of bulkheads

    Roni, Jul 20, 2020 ... 2
    Replies:
    29
    Views:
    2,868
    Roni
    Jul 24, 2020
  3. Dolfiman

    Ultims are back, for the Dhream Cup july 19

    Dolfiman, Jul 17, 2020
    Replies:
    11
    Views:
    1,679
    Dolfiman
    Jul 22, 2020
  4. Capt Ridder

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

    Capt Ridder, Jul 9, 2020
    Replies:
    4
    Views:
    1,881
    Capt Ridder
    Jul 13, 2020
  5. Roni

    Resistance prediction methods/series for catamarans

    Roni, Jul 8, 2020 ... 2
    Replies:
    20
    Views:
    10,207
    Ad Hoc
    Dec 12, 2021
  6. Brian Fanner

    Flyfishing kick boat cat

    Brian Fanner, Jul 6, 2020 ... 2
    Replies:
    23
    Views:
    3,625
    Brian Fanner
    Aug 12, 2020
  7. TomBlake

    Pivot construction for catamaran kick-up rudders

    TomBlake, Jun 28, 2020
    Replies:
    11
    Views:
    2,021
    redreuben
    Jun 30, 2020
  8. Chotu

    Shopping For Used Masts, How Close is Close Enough ?

    Chotu, Jun 27, 2020
    Replies:
    11
    Views:
    2,306
    Tom.151
    Jun 29, 2020
  9. Xpert

    Affordable 9m Catamaran

    Xpert, Jun 23, 2020 ... 2 3
    Replies:
    35
    Views:
    7,195
    bajansailor
    Jul 1, 2020
  10. rturbett

    Gasket material / source

    rturbett, Jun 16, 2020
    Replies:
    1
    Views:
    1,082
    rturbett
    Jun 25, 2020
  11. waynemarlow

    Cutting a mast slot

    waynemarlow, Jun 14, 2020
    Replies:
    1
    Views:
    1,155
    Russell Brown
    Jun 14, 2020
  12. rael dobkins

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

    rael dobkins, Jun 13, 2020
    Replies:
    0
    Views:
    1,414
    rael dobkins
    Jun 13, 2020
  13. Doug Lord

    Macif- out of multihulls!

    Doug Lord, Jun 12, 2020
    Replies:
    1
    Views:
    1,992
    Dolfiman
    Oct 31, 2020
  14. Chotu

    Recommendation For Books Detailing Fit Out Minutia?

    Chotu, Jun 11, 2020
    Replies:
    10
    Views:
    1,929
    Rumars
    Sep 6, 2020
  15. TomBlake

    Extend Rudders on 10metre sailing catamaran

    TomBlake, Jun 10, 2020 ... 2
    Replies:
    26
    Views:
    4,617
    nwguy
    Jun 30, 2020
  16. Chotu

    Can Anyone Explain the Forces on a Longeron?

    Chotu, Jun 4, 2020
    Replies:
    5
    Views:
    3,571
    Chotu
    Jun 11, 2020
  17. rael dobkins

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

    rael dobkins, Jun 3, 2020
    Replies:
    6
    Views:
    2,754
    rael dobkins
    Jun 5, 2020
  18. pitbull

    crossbeam flexibility

    pitbull, May 30, 2020
    Replies:
    9
    Views:
    2,222
    Ad Hoc
    Jun 2, 2020
  19. 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
  20. rturbett

    Epoxy in the sun...

    rturbett, May 24, 2020
    Replies:
    4
    Views:
    1,365
    Yobarnacle
    May 25, 2020
  21. Gunnar Sommerlund

    SeaRider 360 (Need help with Rigging)

    Gunnar Sommerlund, May 24, 2020 ... 2
    Replies:
    20
    Views:
    6,265
    SolGato
    Jul 14, 2021
  22. rturbett

    epoxy clear coat question

    rturbett, May 11, 2020
    Replies:
    8
    Views:
    1,503
    rturbett
    May 12, 2020
  23. Herman Miller

    Simpson Slipstream 15 - Opinions?

    Herman Miller, May 6, 2020
    Replies:
    9
    Views:
    3,720
    Andy Muller
    Feb 2, 2021
  24. redreuben

    Ever wondered why you SHOULD build a boat

    redreuben, Apr 29, 2020
    Replies:
    5
    Views:
    1,914
    YoungGrumpy
    May 11, 2020
  25. Derek_9103

    Calculating expected heel for trimaran

    Derek_9103, Apr 29, 2020 ... 2
    Replies:
    27
    Views:
    5,344
    SSDD
    Oct 31, 2020
  26. nwguy

    Self tacking jib system question

    nwguy, Apr 24, 2020
    Replies:
    14
    Views:
    4,261
    revintage
    Apr 27, 2020
  27. MCourtney

    Bow and stern extensions on a 16m Catamaran

    MCourtney, Apr 20, 2020
    Replies:
    6
    Views:
    2,972
    MCourtney
    Apr 21, 2020
  28. Snowbank

    Outboard Catamaran Design

    Snowbank, Apr 11, 2020
    Replies:
    6
    Views:
    2,551
    Mr Efficiency
    Apr 11, 2020
  29. BlockHead

    Why Is 'My Hull' So Heavy?

    BlockHead, Apr 7, 2020
    Replies:
    13
    Views:
    2,214
    BlockHead
    Apr 11, 2020
  30. Jeff96

    Dart 18 for Everglades Challenge

    Jeff96, Apr 6, 2020
    Replies:
    3
    Views:
    1,695
    Jeff96
    Apr 6, 2020
  31. prabs

    25 foot Live aboard Trimaran

    prabs, Mar 31, 2020
    Replies:
    9
    Views:
    4,409
    guzzis3
    Apr 4, 2020
  32. Gary Baigent

    Law abiding Kiwis.

    Gary Baigent, Mar 31, 2020 ... 2 3 4
    Replies:
    56
    Views:
    9,321
    fallguy
    Dec 17, 2020
  33. revintage

    Waterstays on rearbeam

    revintage, Mar 24, 2020
    Replies:
    0
    Views:
    1,021
    revintage
    Mar 24, 2020
  34. Squidly-Diddly

    how come no multihull toy RC sail boats?

    Squidly-Diddly, Mar 22, 2020 ... 2
    Replies:
    21
    Views:
    3,840
    rturbett
    May 11, 2020
  35. Manfred.pech

    Everglades Challenge 2020

    Manfred.pech, Mar 18, 2020
    Replies:
    4
    Views:
    3,099
    Manfred.pech
    Mar 28, 2020
  36. brendan gardam

    square top sail

    brendan gardam, Mar 16, 2020
    Replies:
    12
    Views:
    1,543
    brendan gardam
    Mar 22, 2020
  37. Markusik

    Leeboards on coastal cruising sail cat?

    Markusik, Mar 12, 2020
    Replies:
    9
    Views:
    3,136
    Markusik
    Apr 9, 2020
  38. brendan gardam

    gunter rig on a 23 ft cat

    brendan gardam, Mar 2, 2020
    Replies:
    5
    Views:
    1,764
    Rumars
    Mar 4, 2020
  39. BobBill

    Shear-web ?

    BobBill, Feb 28, 2020 ... 2 3
    Replies:
    34
    Views:
    3,821
    BobBill
    Nov 30, 2020
  40. shrijeet mishra

    generating catamaran model from a given offset of single hull

    shrijeet mishra, Feb 27, 2020
    Replies:
    8
    Views:
    2,520
    shrijeet mishra
    Mar 31, 2020
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