Boat Design

Discuss boat design concepts, projects, plans, reviews, resources, and general design topics.

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  1. Velsia

    Seaworthiness: The Forgotten Factor- C.A Marchaj

    Velsia, Sep 13, 2020 ... 2 3
    Replies:
    40
    Views:
    1,106
    peter radclyffe
    Oct 1, 2020 at 1:17 AM
  2. peter radclyffe

    Estonia sinking

    peter radclyffe, Sep 29, 2020 at 2:46 PM
    Replies:
    3
    Views:
    181
    JSL
    Sep 30, 2020 at 5:25 PM
  3. Shallowbag Shanty

    29ft, 1976 sportcraft C-Eagle with 351W engine OMC outdrive.

    Shallowbag Shanty, Sep 29, 2020 at 8:05 AM ... 2
    Replies:
    23
    Views:
    172
    Shallowbag Shanty
    Sep 30, 2020 at 12:04 PM
  4. MRee

    moving Pontoon boat outboard transom forward

    MRee, Jul 11, 2019
    Replies:
    12
    Views:
    1,465
    BlueBell
    Sep 30, 2020 at 10:52 AM
  5. Gvidon

    Developing hard chine hulls

    Gvidon, Sep 29, 2020 at 4:11 PM
    Replies:
    3
    Views:
    139
    sharpii2
    Sep 30, 2020 at 3:14 AM
  6. why crazy

    would outboards mounted midships just break tradition, or other risks?

    why crazy, Aug 10, 2020
    Replies:
    13
    Views:
    470
    brendan gardam
    Sep 30, 2020 at 12:09 AM
  7. misanthropicexplore

    Sailboat modifications for shorthanded, blue water passages

    misanthropicexplore, Sep 22, 2020 ... 2
    Replies:
    25
    Views:
    670
    Blueknarr
    Sep 29, 2020 at 11:11 AM
  8. Flysafe

    Levi Dart 38

    Flysafe, Sep 25, 2020 at 11:31 AM
    Replies:
    6
    Views:
    240
    Flysafe
    Sep 29, 2020 at 10:08 AM
  9. Forsmanni

    25ft midcabin boat. From I/O to twin outboard conversion

    Forsmanni, Aug 31, 2020 ... 2 3
    Replies:
    38
    Views:
    663
    brendan gardam
    Sep 29, 2020 at 7:42 AM
  10. parkland

    How come you can't buy a folding trailerable pontoon barge?

    parkland, Sep 7, 2012 ... 5 6 7
    Replies:
    99
    Views:
    70,301
    Mark Laird
    Sep 29, 2020 at 2:07 AM
  11. possum

    13ft, 20hp boat for light chop

    possum, Aug 14, 2020
    Replies:
    13
    Views:
    442
    Matt Gent
    Sep 29, 2020 at 12:15 AM
  12. Biscuit

    Welder / Marine Engineer new to Designing and building boats

    Biscuit, Sep 28, 2020 at 9:26 AM
    Replies:
    4
    Views:
    117
    TANSL
    Sep 28, 2020 at 11:18 AM
  13. DCockey

    Catamaran aluminum yachts announced by Metal Shark

    DCockey, Sep 27, 2020 at 11:20 AM ... 2
    Replies:
    29
    Views:
    437
    Mr Efficiency
    Sep 28, 2020 at 5:47 AM
  14. JamesRiver

    Utility Semi-Vee Hull

    JamesRiver, Sep 27, 2020 at 10:33 PM
    Replies:
    5
    Views:
    115
    DCockey
    Sep 28, 2020 at 1:22 AM
  15. AleX`G

    Wing Sail design

    AleX`G, Jun 27, 2006 ... 2
    Replies:
    24
    Views:
    22,541
    ken61137
    Sep 27, 2020 at 9:45 PM
  16. Michael Browne

    Foil design for my motor trimaran

    Michael Browne, Sep 14, 2020
    Replies:
    13
    Views:
    373
    W9GFO
    Sep 27, 2020 at 4:57 PM
  17. Daan

    Small gearbox

    Daan, Sep 7, 2020 ... 2 3
    Replies:
    38
    Views:
    988
    BlueBell
    Sep 26, 2020 at 10:44 AM
  18. kleenbreeze

    Do Cloth Wingsails Actually Work?

    kleenbreeze, Sep 26, 2020 at 6:04 AM
    Replies:
    2
    Views:
    126
    kleenbreeze
    Sep 26, 2020 at 10:30 AM
  19. BlueBell

    Dave Gerr's INTERDICTOR Design

    BlueBell, Sep 23, 2020
    Replies:
    6
    Views:
    302
    TANSL
    Sep 24, 2020
  20. rfleet1066

    Sebastian Marie to the next level

    rfleet1066, Sep 21, 2020
    Replies:
    4
    Views:
    200
    gonzo
    Sep 24, 2020
  21. rosiner

    Hull made out of 2205 duplex steel

    rosiner, Sep 1, 2020
    Replies:
    6
    Views:
    301
    fredrosse
    Sep 23, 2020
  22. dustman

    Controlling draft on flat cut sail?

    dustman, Aug 27, 2020 ... 2 3 4
    Replies:
    45
    Views:
    1,246
    dustman
    Sep 22, 2020
  23. dustman

    Sail Area / Power

    dustman, Sep 2, 2020 ... 2 3 4
    Replies:
    49
    Views:
    1,263
    fastsailing
    Sep 21, 2020
  24. brendan gardam

    Sitting height cabin

    brendan gardam, Sep 20, 2020
    Replies:
    6
    Views:
    223
    brendan gardam
    Sep 21, 2020
  25. ryanonthebeach

    Tabernacle feasibility 65ft carbon mast

    ryanonthebeach, Sep 17, 2020
    Replies:
    11
    Views:
    258
    Rumars
    Sep 20, 2020
  26. Squidly-Diddly

    What is world's biggest planning hull boat and how fast?

    Squidly-Diddly, Sep 16, 2020 ... 2
    Replies:
    29
    Views:
    722
    jehardiman
    Sep 20, 2020
  27. pironiero

    Is class 950 still relevant?

    pironiero, Sep 17, 2020
    Replies:
    4
    Views:
    220
    waikikin
    Sep 19, 2020
  28. Quidnic

    Quidnic shanty tiny house boat

    Quidnic, Apr 19, 2020 ... 2 3 4
    Replies:
    57
    Views:
    2,344
    Squidly-Diddly
    Sep 18, 2020
  29. livenlearn

    12x36 houseboat on encapsulated foam

    livenlearn, Sep 13, 2020
    Replies:
    14
    Views:
    408
    bajansailor
    Sep 18, 2020
  30. peter radclyffe

    N D T Keelbolts

    peter radclyffe, Sep 14, 2020
    Replies:
    3
    Views:
    216
    gonzo
    Sep 17, 2020
  31. mariobrothers88

    Jamie Mantzel's Fiberglass Pontoon/Catamaran Fiberglass Boat Design

    mariobrothers88, Sep 9, 2020 ... 2 3
    Replies:
    34
    Views:
    838
    Rumars
    Sep 16, 2020
  32. Dominika

    3D Commercial Ships Visualizations

    Dominika, Sep 14, 2020
    Replies:
    2
    Views:
    189
    Dominika
    Sep 15, 2020
  33. Yobarnacle

    Gravy Boat, Custom Albin 25

    Yobarnacle, Feb 5, 2016 ... 25 26 27
    Replies:
    400
    Views:
    41,422
    Yobarnacle
    Sep 14, 2020
  34. mariobrothers88

    Harryproa...Too good to be true?

    mariobrothers88, Sep 12, 2020
    Replies:
    4
    Views:
    386
    CocoonCruisers
    Sep 14, 2020
  35. adam stevens

    Double ender designs slow

    adam stevens, Sep 10, 2020
    Replies:
    11
    Views:
    473
    Velsia
    Sep 13, 2020
  36. brendan gardam

    Car transporter powered by sail

    brendan gardam, Sep 12, 2020
    Replies:
    11
    Views:
    247
    Blueknarr
    Sep 12, 2020
  37. Squidly-Diddly

    is this a real modern container ship hull shape? looks very unbalanced front to rear.

    Squidly-Diddly, Sep 11, 2020 ... 2
    Replies:
    20
    Views:
    532
    Mr Efficiency
    Sep 12, 2020
  38. JohnRichard

    Sail hull power conversion questions

    JohnRichard, Sep 9, 2020
    Replies:
    7
    Views:
    279
    Will Gilmore
    Sep 11, 2020
  39. JT2017

    Using inverted M bracket as lifting strake, pros and cons

    JT2017, Apr 6, 2020
    Replies:
    5
    Views:
    469
    JSL
    Sep 10, 2020
  40. pironiero

    What does One design mean?

    pironiero, Sep 8, 2020 ... 2
    Replies:
    19
    Views:
    515
    gonzo
    Sep 10, 2020
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