Multihulls

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

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  1. Derek_9103

    Calculating expected heel for trimaran

    Derek_9103, Apr 29, 2020 ... 2
    Replies:
    27
    Views:
    2,426
    SSDD
    Oct 31, 2020
  2. redreuben

    Ever wondered why you SHOULD build a boat

    redreuben, Apr 29, 2020
    Replies:
    5
    Views:
    1,025
    YoungGrumpy
    May 11, 2020
  3. Herman Miller

    Simpson Slipstream 15 - Opinions?

    Herman Miller, May 6, 2020
    Replies:
    9
    Views:
    1,524
    Andy Muller
    Feb 2, 2021
  4. rturbett

    epoxy clear coat question

    rturbett, May 11, 2020
    Replies:
    8
    Views:
    699
    rturbett
    May 12, 2020
  5. Gunnar Sommerlund

    SeaRider 360 (Need help with Rigging)

    Gunnar Sommerlund, May 24, 2020
    Replies:
    12
    Views:
    1,163
    Gunnar Sommerlund
    May 26, 2020
  6. rturbett

    Epoxy in the sun...

    rturbett, May 24, 2020
    Replies:
    4
    Views:
    573
    Yobarnacle
    May 25, 2020
  7. John Perry

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

    John Perry, May 29, 2020
    Replies:
    6
    Views:
    1,179
    zombat
    Jul 2, 2020
  8. pitbull

    crossbeam flexibility

    pitbull, May 30, 2020
    Replies:
    9
    Views:
    1,039
    Ad Hoc
    Jun 2, 2020
  9. rael dobkins

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

    rael dobkins, Jun 3, 2020
    Replies:
    6
    Views:
    1,105
    rael dobkins
    Jun 5, 2020
  10. Chotu

    Can Anyone Explain the Forces on a Longeron?

    Chotu, Jun 4, 2020
    Replies:
    5
    Views:
    1,156
    Chotu
    Jun 11, 2020
  11. TomBlake

    Extend Rudders on 10metre sailing catamaran

    TomBlake, Jun 10, 2020 ... 2
    Replies:
    26
    Views:
    1,797
    nwguy
    Jun 30, 2020
  12. Chotu

    Recommendation For Books Detailing Fit Out Minutia?

    Chotu, Jun 11, 2020
    Replies:
    10
    Views:
    878
    Rumars
    Sep 6, 2020
  13. Doug Lord

    Macif- out of multihulls!

    Doug Lord, Jun 12, 2020
    Replies:
    1
    Views:
    841
    Dolfiman
    Oct 31, 2020
  14. rael dobkins

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

    rael dobkins, Jun 13, 2020
    Replies:
    0
    Views:
    615
    rael dobkins
    Jun 13, 2020
  15. waynemarlow

    Cutting a mast slot

    waynemarlow, Jun 14, 2020
    Replies:
    1
    Views:
    481
    Russell Brown
    Jun 14, 2020
  16. rturbett

    Gasket material / source

    rturbett, Jun 16, 2020
    Replies:
    1
    Views:
    432
    rturbett
    Jun 25, 2020
  17. Xpert

    Affordable 9m Catamaran

    Xpert, Jun 23, 2020 ... 2 3
    Replies:
    35
    Views:
    3,173
    bajansailor
    Jul 1, 2020
  18. Chotu

    Shopping For Used Masts, How Close is Close Enough ?

    Chotu, Jun 27, 2020
    Replies:
    11
    Views:
    764
    Tom.151
    Jun 29, 2020
  19. TomBlake

    Pivot construction for catamaran kick-up rudders

    TomBlake, Jun 28, 2020
    Replies:
    11
    Views:
    859
    redreuben
    Jun 30, 2020
  20. Brian Fanner

    Flyfishing kick boat cat

    Brian Fanner, Jul 6, 2020 ... 2
    Replies:
    23
    Views:
    1,490
    Brian Fanner
    Aug 12, 2020
  21. Roni

    Resistance prediction methods/series for catamarans

    Roni, Jul 8, 2020
    Replies:
    6
    Views:
    872
    Dolfiman
    Jul 11, 2020
  22. Capt Ridder

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

    Capt Ridder, Jul 9, 2020
    Replies:
    4
    Views:
    693
    Capt Ridder
    Jul 13, 2020
  23. Dolfiman

    Ultims are back, for the Dhream Cup july 19

    Dolfiman, Jul 17, 2020
    Replies:
    11
    Views:
    767
    Dolfiman
    Jul 22, 2020
  24. Roni

    Using aluminiun masts sections as tranverse structure instead of bulkheads

    Roni, Jul 20, 2020 ... 2
    Replies:
    29
    Views:
    1,316
    Roni
    Jul 24, 2020
  25. waynemarlow

    Max lift on symetric foils at 6 degrees inclination

    waynemarlow, Jul 25, 2020
    Replies:
    1
    Views:
    465
    waynemarlow
    Jul 25, 2020
  26. Slingshot

    Internal Web for composite dagger board or wing mast?

    Slingshot, Jul 29, 2020
    Replies:
    6
    Views:
    860
    oldmulti
    Aug 14, 2020
  27. Mark O Hara

    Changing Catamaran Beams from Wood to Composite.

    Mark O Hara, Aug 4, 2020 ... 4 5 6
    Replies:
    78
    Views:
    4,613
    brian eiland
    Aug 28, 2020
  28. magwas

    Hobie 18F centerboard box repair?

    magwas, Aug 5, 2020
    Replies:
    4
    Views:
    554
    philSweet
    Aug 9, 2020
  29. Crashed

    Any buoyancy mathematician's around ?

    Crashed, Aug 6, 2020 ... 2
    Replies:
    29
    Views:
    1,078
    Rumars
    Aug 7, 2020
  30. andybrnr

    Warren Light Craft Tandem Sail manuals/rigging guide?

    andybrnr, Aug 6, 2020
    Replies:
    4
    Views:
    565
    upchurchmr
    Aug 7, 2020
  31. Libertist

    Mast profile list - weight, specs, etc

    Libertist, Sep 1, 2020
    Replies:
    1
    Views:
    419
    Libertist
    Sep 1, 2020
  32. brendan gardam

    tunnel clearance

    brendan gardam, Sep 2, 2020
    Replies:
    8
    Views:
    591
    Ad Hoc
    Sep 5, 2020
  33. BCowan

    Raidboat Pacific Proa

    BCowan, Sep 2, 2020 ... 2 3
    Replies:
    32
    Views:
    3,711
    rob denney
    Mar 15, 2021
  34. Jeff in Boston

    Order of importance for hull efficiency

    Jeff in Boston, Sep 15, 2020
    Replies:
    11
    Views:
    969
    redreuben
    Sep 20, 2020
  35. Matthias S.

    Newbie question: would this trimaran folding system work? (parallel hinge)

    Matthias S., Sep 25, 2020
    Replies:
    11
    Views:
    1,398
    kleppar
    Dec 28, 2020
  36. Cholsson

    Is Corsair Dash 750 seaworthy for the race?

    Cholsson, Sep 26, 2020
    Replies:
    3
    Views:
    624
    luckystrike
    Oct 5, 2020
  37. fallguy

    Anchor locations and placements

    fallguy, Sep 28, 2020
    Replies:
    2
    Views:
    485
    Blueknarr
    Sep 28, 2020
  38. MaddMatt

    Plans with CNC option?

    MaddMatt, Oct 4, 2020
    Replies:
    5
    Views:
    612
    bajansailor
    Oct 4, 2020
  39. srimes

    Characteristics of narrow-beam catamarans

    srimes, Oct 6, 2020
    Replies:
    13
    Views:
    1,365
    redreuben
    Oct 8, 2020
  40. Tom2x4

    Where plans go to die?

    Tom2x4, Oct 7, 2020 ... 2 3
    Replies:
    39
    Views:
    2,665
    David L. Dodd II
    Oct 14, 2020
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