Boat Design

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

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  1. Gvidon

    Developing hard chine hulls

    Gvidon, Sep 29, 2020 at 4:11 PM
    Replies:
    3
    Views:
    81
    sharpii2
    Sep 30, 2020 at 3:14 AM
  2. peter radclyffe

    Estonia sinking

    peter radclyffe, Sep 29, 2020 at 2:46 PM
    Replies:
    2
    Views:
    82
    sharpii2
    Sep 30, 2020 at 3:47 AM
  3. Shallowbag Shanty

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

    Shallowbag Shanty, Sep 29, 2020 at 8:05 AM
    Replies:
    7
    Views:
    72
    Mr Efficiency
    Sep 30, 2020 at 5:00 AM
  4. Biscuit

    Welder / Marine Engineer new to Designing and building boats

    Biscuit, Sep 28, 2020 at 9:26 AM
    Replies:
    4
    Views:
    102
    TANSL
    Sep 28, 2020 at 11:18 AM
  5. JamesRiver

    Utility Semi-Vee Hull

    JamesRiver, Sep 27, 2020 at 10:33 PM
    Replies:
    5
    Views:
    101
    DCockey
    Sep 28, 2020 at 1:22 AM
  6. DCockey

    Catamaran aluminum yachts announced by Metal Shark

    DCockey, Sep 27, 2020 at 11:20 AM ... 2
    Replies:
    29
    Views:
    423
    Mr Efficiency
    Sep 28, 2020 at 5:47 AM
  7. kleenbreeze

    Do Cloth Wingsails Actually Work?

    kleenbreeze, Sep 26, 2020 at 6:04 AM
    Replies:
    2
    Views:
    120
    kleenbreeze
    Sep 26, 2020 at 10:30 AM
  8. Flysafe

    Levi Dart 38

    Flysafe, Sep 25, 2020 at 11:31 AM
    Replies:
    6
    Views:
    229
    Flysafe
    Sep 29, 2020 at 10:08 AM
  9. BlueBell

    Dave Gerr's INTERDICTOR Design

    BlueBell, Sep 23, 2020
    Replies:
    6
    Views:
    294
    TANSL
    Sep 24, 2020 at 6:37 PM
  10. misanthropicexplore

    Sailboat modifications for shorthanded, blue water passages

    misanthropicexplore, Sep 22, 2020 ... 2
    Replies:
    25
    Views:
    645
    Blueknarr
    Sep 29, 2020 at 11:11 AM
  11. rfleet1066

    Sebastian Marie to the next level

    rfleet1066, Sep 21, 2020
    Replies:
    4
    Views:
    196
    gonzo
    Sep 24, 2020 at 9:03 AM
  12. brendan gardam

    Sitting height cabin

    brendan gardam, Sep 20, 2020
    Replies:
    6
    Views:
    220
    brendan gardam
    Sep 21, 2020
  13. pironiero

    Is class 950 still relevant?

    pironiero, Sep 17, 2020
    Replies:
    4
    Views:
    215
    waikikin
    Sep 19, 2020
  14. ryanonthebeach

    Tabernacle feasibility 65ft carbon mast

    ryanonthebeach, Sep 17, 2020
    Replies:
    11
    Views:
    256
    Rumars
    Sep 20, 2020
  15. Squidly-Diddly

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

    Squidly-Diddly, Sep 16, 2020 ... 2
    Replies:
    29
    Views:
    709
    jehardiman
    Sep 20, 2020
  16. Michael Browne

    Foil design for my motor trimaran

    Michael Browne, Sep 14, 2020
    Replies:
    13
    Views:
    368
    W9GFO
    Sep 27, 2020 at 4:57 PM
  17. peter radclyffe

    N D T Keelbolts

    peter radclyffe, Sep 14, 2020
    Replies:
    3
    Views:
    214
    gonzo
    Sep 17, 2020
  18. Dominika

    3D Commercial Ships Visualizations

    Dominika, Sep 14, 2020
    Replies:
    2
    Views:
    187
    Dominika
    Sep 15, 2020
  19. livenlearn

    12x36 houseboat on encapsulated foam

    livenlearn, Sep 13, 2020
    Replies:
    14
    Views:
    404
    bajansailor
    Sep 18, 2020
  20. Velsia

    Seaworthiness: The Forgotten Factor- C.A Marchaj

    Velsia, Sep 13, 2020 ... 2 3
    Replies:
    34
    Views:
    1,039
    Will Gilmore
    Sep 30, 2020 at 12:22 AM
  21. mariobrothers88

    Harryproa...Too good to be true?

    mariobrothers88, Sep 12, 2020
    Replies:
    4
    Views:
    382
    CocoonCruisers
    Sep 14, 2020
  22. brendan gardam

    Car transporter powered by sail

    brendan gardam, Sep 12, 2020
    Replies:
    11
    Views:
    244
    Blueknarr
    Sep 12, 2020
  23. 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:
    527
    Mr Efficiency
    Sep 12, 2020
  24. adam stevens

    Double ender designs slow

    adam stevens, Sep 10, 2020
    Replies:
    11
    Views:
    472
    Velsia
    Sep 13, 2020
  25. JohnRichard

    Sail hull power conversion questions

    JohnRichard, Sep 9, 2020
    Replies:
    7
    Views:
    277
    Will Gilmore
    Sep 11, 2020
  26. mariobrothers88

    Jamie Mantzel's Fiberglass Pontoon/Catamaran Fiberglass Boat Design

    mariobrothers88, Sep 9, 2020 ... 2 3
    Replies:
    34
    Views:
    831
    Rumars
    Sep 16, 2020
  27. Corasco

    Slipper Launch project, finally

    Corasco, Sep 8, 2020
    Replies:
    2
    Views:
    243
    Corasco
    Sep 9, 2020
  28. pironiero

    What does One design mean?

    pironiero, Sep 8, 2020 ... 2
    Replies:
    19
    Views:
    509
    gonzo
    Sep 10, 2020
  29. Daan

    Small gearbox

    Daan, Sep 7, 2020 ... 2 3
    Replies:
    38
    Views:
    977
    BlueBell
    Sep 26, 2020 at 10:44 AM
  30. amariner

    One more motorboat Crab 620 on the water

    amariner, Sep 6, 2020
    Replies:
    1
    Views:
    155
    Squidly-Diddly
    Sep 6, 2020
  31. KismetFI

    Raising Transom Height from 20in to 25in?

    KismetFI, Sep 3, 2020
    Replies:
    7
    Views:
    274
    KismetFI
    Sep 4, 2020
  32. dustman

    Sail Area / Power

    dustman, Sep 2, 2020 ... 2 3 4
    Replies:
    49
    Views:
    1,248
    fastsailing
    Sep 21, 2020
  33. Jure Bebic

    Flexural Stiffness -High speed light craft

    Jure Bebic, Sep 1, 2020
    Replies:
    7
    Views:
    412
    Jure Bebic
    Sep 7, 2020
  34. Squidly-Diddly

    bow, Main and aft Tri-foil hydrofoil?

    Squidly-Diddly, Sep 1, 2020
    Replies:
    4
    Views:
    248
    Squidly-Diddly
    Sep 3, 2020
  35. rosiner

    Hull made out of 2205 duplex steel

    rosiner, Sep 1, 2020
    Replies:
    6
    Views:
    298
    fredrosse
    Sep 23, 2020
  36. aktxyz123

    are "open source" yacht designs a thing

    aktxyz123, Aug 31, 2020 ... 2
    Replies:
    16
    Views:
    548
    philSweet
    Sep 1, 2020
  37. Forsmanni

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

    Forsmanni, Aug 31, 2020 ... 2 3
    Replies:
    38
    Views:
    645
    brendan gardam
    Sep 29, 2020 at 7:42 AM
  38. Squidly-Diddly

    Wave-peircing & Axe bows, how about Saw bows?

    Squidly-Diddly, Aug 30, 2020
    Replies:
    7
    Views:
    470
    cracked_ribs
    Sep 4, 2020
  39. dustman

    Controlling draft on flat cut sail?

    dustman, Aug 27, 2020 ... 2 3 4
    Replies:
    45
    Views:
    1,235
    dustman
    Sep 22, 2020
  40. aktxyz123

    diesel electric for 70-100ft boats? 200-300 hp equiv

    aktxyz123, Aug 24, 2020
    Replies:
    9
    Views:
    431
    JSL
    Aug 27, 2020
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