Boat Design

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

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  1. Richard Reed

    Easy way to reduce rolling on bilge-keeler?

    Richard Reed, Jan 9, 2025 ... 4 5 6
    Replies:
    83
    Views:
    2,001
    fallguy
    Jan 17, 2025 at 7:12 AM
  2. ToMeK

    Aluminium Boat Weight Estimation

    ToMeK, Jan 17, 2025 at 6:00 AM
    Replies:
    0
    Views:
    9
    ToMeK
    Jan 17, 2025 at 6:00 AM
  3. HappyDork

    What is the HP needed to drive a 20m x 3m 40MT boat @ 13kph?

    HappyDork, Jan 16, 2025 at 10:19 PM
    Replies:
    1
    Views:
    60
    seasquirt
    Jan 17, 2025 at 4:51 AM
  4. ChallengeBoatworks

    How'd Chappelle take lines?

    ChallengeBoatworks, Jan 14, 2025 at 7:42 PM ... 2 3
    Replies:
    39
    Views:
    799
    fallguy
    Jan 16, 2025 at 11:56 PM
  5. REAPER NZ

    Help?

    REAPER NZ, Jan 14, 2025 at 9:45 PM
    Replies:
    5
    Views:
    281
    gonzo
    Jan 16, 2025 at 11:41 AM
  6. Kermath

    Split Paddle Wheel propulsion design

    Kermath, Dec 27, 2024 ... 5 6 7
    Replies:
    97
    Views:
    4,231
    Will Gilmore
    Jan 16, 2025 at 7:43 AM
  7. wroc

    Davit height (dinghy bottom height) above waterline

    wroc, Jan 13, 2025 at 6:33 PM
    Replies:
    3
    Views:
    200
    jehardiman
    Jan 15, 2025 at 9:46 PM
  8. montero
    Locked

    Solar thermal propulsion.

    montero, Jan 10, 2025 ... 2 3
    Replies:
    36
    Views:
    880
    Boat Design Net Moderator
    Jan 14, 2025 at 6:26 PM
  9. AnthonyW

    Kerdyn Green Foam - trimaran / multipurpose

    AnthonyW, Oct 14, 2024 ... 2
    Replies:
    22
    Views:
    8,321
    CT249
    Jan 14, 2025 at 5:19 PM
  10. Johan van Dijk

    concept for an electric launch

    Johan van Dijk, Jan 13, 2025 at 10:04 AM
    Replies:
    7
    Views:
    272
    rangebowdrie
    Jan 14, 2025 at 12:52 PM
  11. surfsem

    2.6m dingy hull extension, fiberglass rib boat

    surfsem, Jan 11, 2025 at 5:22 AM
    Replies:
    3
    Views:
    257
    BlueBell
    Jan 14, 2025 at 11:15 AM
  12. smilicus

    Scaling down a design to build a Mini / Micro Sailboat

    smilicus, Jan 12, 2025 at 11:14 AM
    Replies:
    14
    Views:
    418
    seasquirt
    Jan 14, 2025 at 3:46 AM
  13. Cjbrill715

    5052 H32...Yay or Nay.

    Cjbrill715, Jan 10, 2025
    Replies:
    11
    Views:
    502
    Ad Hoc
    Jan 12, 2025 at 7:29 PM
  14. tpenfield

    Twin I/O to Twin Outboard Conversion Project

    tpenfield, Oct 10, 2024 ... 2
    Replies:
    21
    Views:
    1,903
    tpenfield
    Jan 12, 2025 at 2:45 PM
  15. Satrio12

    Looking for some tips for a glass bottom boat design

    Satrio12, Dec 19, 2024 ... 3 4 5
    Replies:
    61
    Views:
    2,263
    TANSL
    Jan 11, 2025 at 4:19 AM
  16. pbury

    Global cruiser concept - 25m stabilised monohull

    pbury, Jan 9, 2025
    Replies:
    5
    Views:
    320
    pbury
    Jan 10, 2025
  17. Letitride

    Crowther Shockwave Design

    Letitride, Mar 1, 2024 ... 2
    Replies:
    16
    Views:
    1,747
    CT249
    Jan 9, 2025
  18. briancady413

    Once I rowed a dinghy with an interesting seat

    briancady413, Dec 3, 2011 ... 2
    Replies:
    15
    Views:
    4,412
    Skip Johnson
    Jan 9, 2025
  19. fallguy

    Self righting rc boat

    fallguy, Jan 5, 2025 ... 2
    Replies:
    18
    Views:
    692
    fallguy
    Jan 8, 2025
  20. brendan gardam

    protocols on copying someones work

    brendan gardam, Jul 23, 2020 ... 2
    Replies:
    17
    Views:
    3,062
    Skip Johnson
    Jan 8, 2025
  21. Squidly-Diddly

    someone else sorta using my saw bow concept

    Squidly-Diddly, Jan 6, 2025
    Replies:
    9
    Views:
    440
    Squidly-Diddly
    Jan 8, 2025
  22. RSD

    Red Sea Dive Boat

    RSD, Dec 21, 2024 ... 2 3
    Replies:
    35
    Views:
    1,667
    BlueBell
    Jan 7, 2025
  23. Nick Wootton

    Swim.platfrom hydraulics

    Nick Wootton, Jan 4, 2025
    Replies:
    6
    Views:
    398
    comfisherman
    Jan 6, 2025
  24. green_mango

    Deck Wash System

    green_mango, Dec 20, 2024
    Replies:
    4
    Views:
    468
    green_mango
    Jan 5, 2025
  25. aliyagizz

    curing

    aliyagizz, Jan 3, 2025
    Replies:
    7
    Views:
    338
    fallguy
    Jan 5, 2025
  26. AxelVilhelm

    Reading, videos etc on displacement hull design theory

    AxelVilhelm, Jan 1, 2025
    Replies:
    6
    Views:
    597
    AxelVilhelm
    Jan 5, 2025
  27. High72

    Solar powered boat

    High72, Dec 27, 2023 ... 2
    Replies:
    29
    Views:
    4,199
    kach22i
    Jan 5, 2025
  28. DaveHWS

    Boden Boat Design Plans

    DaveHWS, Jan 2, 2025
    Replies:
    3
    Views:
    336
    Herreshock
    Jan 3, 2025
  29. akela
    Locked

    Beneteau 40.7 hull plans

    akela, Dec 30, 2024 ... 2
    Replies:
    22
    Views:
    940
    CT249
    Jan 2, 2025
  30. M134

    Looking for CAD model

    M134, Jan 1, 2025
    Replies:
    0
    Views:
    389
    M134
    Jan 1, 2025
  31. Unique Trimaran

    Shapes For Fiberglass Trimaran Hull

    Unique Trimaran, Dec 25, 2024 ... 2 3
    Replies:
    34
    Views:
    1,441
    gonzo
    Dec 29, 2024
  32. rwatson

    Everything Old is new again - Flettner Rotor Ship is launched

    rwatson, Sep 1, 2008 ... 42 43 44
    Replies:
    651
    Views:
    221,644
    rwatson
    Dec 29, 2024
  33. TomA

    Digitize plans / prints on a CNC machine?

    TomA, Dec 23, 2024 ... 2
    Replies:
    26
    Views:
    1,177
    gonzo
    Dec 29, 2024
  34. socalspearit

    Custom 19' all weather, minimalist, strip plank composite 'go fast'

    socalspearit, Sep 2, 2021 ... 14 15 16
    Replies:
    239
    Views:
    31,410
    socalspearit
    Dec 29, 2024
  35. yabert

    How to design aluminum dinghy

    yabert, Dec 19, 2024 ... 2
    Replies:
    19
    Views:
    1,069
    Barry
    Dec 28, 2024
  36. Cappuccino

    Albin 25: Emergency Propulsion/Kicker Motor

    Cappuccino, Dec 23, 2024 ... 2
    Replies:
    26
    Views:
    970
    philSweet
    Dec 26, 2024
  37. Arton

    Wigley hull wih assymetric and symetric

    Arton, Dec 20, 2024
    Replies:
    6
    Views:
    536
    Arton
    Dec 23, 2024
  38. philSweet

    What do you call the liquid that remains in a ship's tanks when they are emptied?

    philSweet, Feb 23, 2020 ... 2
    Replies:
    24
    Views:
    5,087
    philSweet
    Dec 23, 2024
  39. CustomX

    PM 38 Blueprints Found - Rare?

    CustomX, Dec 21, 2024
    Replies:
    5
    Views:
    366
    skaraborgcraft
    Dec 22, 2024
  40. Steve W

    Smaller Sea sleds

    Steve W, Jun 3, 2024 ... 2
    Replies:
    19
    Views:
    1,634
    gonzo
    Dec 22, 2024
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