Boat Design

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

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  1. rascalfair

    Center of rotation of powerboat hull

    rascalfair, Feb 1, 2005
    Replies:
    10
    Views:
    5,735
    June Fourth
    Feb 19, 2026 at 1:36 AM
  2. william stokes

    did the 14m myself

    william stokes, Dec 7, 2025 ... 2 3 4
    Replies:
    53
    Views:
    2,794
    william stokes
    Feb 19, 2026 at 12:08 AM
  3. NArn503

    First timer question

    NArn503, Feb 18, 2026 at 6:06 PM
    Replies:
    4
    Views:
    62
    NArn503
    Feb 18, 2026 at 9:12 PM
  4. tpenfield

    Twin I/O to Twin Outboard Conversion Project

    tpenfield, Oct 10, 2024 ... 16 17 18
    Replies:
    266
    Views:
    34,768
    BlueBell
    Feb 18, 2026 at 12:15 PM
  5. northcoastollie

    Modifying a Karl Stambaugh design- when to hire a naval architect?

    northcoastollie, Feb 16, 2026 at 2:37 PM
    Replies:
    6
    Views:
    197
    TANSL
    Feb 18, 2026 at 8:56 AM
  6. brian eiland

    Motor Sailers by Philip Rhodes & John Alden

    brian eiland, Apr 3, 2007 ... 10 11 12
    Replies:
    168
    Views:
    115,524
    brian eiland
    Feb 17, 2026 at 9:28 AM
  7. robert.drag0n.95

    Numerical/mathematical methods for hullform lines to Modern Vessels

    robert.drag0n.95, Sep 7, 2024 ... 2
    Replies:
    29
    Views:
    3,371
    Remmlinger
    Feb 16, 2026 at 8:48 AM
  8. Squidly-Diddly

    what are boat and "navigation" details of Australian rescue story?

    Squidly-Diddly, Feb 12, 2026
    Replies:
    2
    Views:
    254
    Brian@BNE
    Feb 14, 2026 at 10:08 PM
  9. brian eiland

    Redesigning the Pilgrim 40 Trawler / Canal Boat / Coastal Cruiser

    brian eiland, Jan 24, 2017 ... 2
    Replies:
    24
    Views:
    31,290
    brian eiland
    Feb 14, 2026 at 6:08 PM
  10. Christopher Sandlin

    Looking for a rowboat design

    Christopher Sandlin, Jan 31, 2026 ... 2
    Replies:
    15
    Views:
    783
    HelmutSheina
    Feb 12, 2026
  11. BlubBlub

    What's the difference between lifeboats and a normal boat?

    BlubBlub, Jan 12, 2026 ... 2 3
    Replies:
    30
    Views:
    1,629
    bajansailor
    Feb 11, 2026
  12. Stofferaus

    Hickman style hull any good for low powered outboard Houseboat?

    Stofferaus, Feb 24, 2021 ... 4 5 6
    Replies:
    81
    Views:
    13,236
    DogCavalry
    Feb 10, 2026
  13. peter radclyffe

    yacht sunk in med

    peter radclyffe, Aug 19, 2024 ... 13 14 15
    Replies:
    211
    Views:
    31,189
    CarlosK2
    Feb 10, 2026
  14. DogCavalry

    Hickman Sea Sled Information

    DogCavalry, Feb 12, 2021 ... 13 14 15
    Replies:
    210
    Views:
    43,302
    Ad Hoc
    Feb 9, 2026
  15. wojtek86

    Re-designed Hickman Seasled, video.

    wojtek86, Oct 6, 2011 ... 2 3
    Replies:
    36
    Views:
    11,560
    BlueBell
    Feb 7, 2026
  16. Andrew Leigh

    Transom Angle and effect in Outboard Trim

    Andrew Leigh, Dec 28, 2025 ... 2 3 4
    Replies:
    59
    Views:
    2,950
    HelmutSheina
    Feb 6, 2026
  17. Biscuit

    Navacal - Scantling Calculator Demo Video

    Biscuit, Feb 5, 2026
    Replies:
    2
    Views:
    251
    Biscuit
    Feb 5, 2026
  18. Tom Dugan

    Modifying Glen-L 32 ft wooden pontoon plans to 38 ft Tri-toon houseboat

    Tom Dugan, Jan 25, 2026
    Replies:
    7
    Views:
    608
    bajansailor
    Jan 30, 2026
  19. peter radclyffe

    chopped mat

    peter radclyffe, Jan 29, 2026
    Replies:
    6
    Views:
    333
    HelmutSheina
    Jan 29, 2026
  20. BlueBell

    Complete NZ Boat Design and Promotion

    BlueBell, Jan 28, 2026
    Replies:
    1
    Views:
    296
    gonzo
    Jan 29, 2026
  21. WillyOcean

    Pacific catamaran outboard conversion

    WillyOcean, Jan 1, 2026 ... 2
    Replies:
    29
    Views:
    1,522
    SolGato
    Jan 27, 2026
  22. Nordski

    Tracy O'Brien Headwater 18

    Nordski, Dec 20, 2025
    Replies:
    8
    Views:
    783
    Jmboats
    Jan 24, 2026
  23. philSweet

    2023 Genius Star Fire analysis based on NTSB report

    philSweet, Jan 20, 2026
    Replies:
    2
    Views:
    299
    fallguy
    Jan 20, 2026
  24. TANSL

    Plans for "tailor-made" boats

    TANSL, Jul 23, 2019
    Replies:
    6
    Views:
    3,640
    TANSL
    Jan 19, 2026
  25. Murky Deep

    William Jackson seaskiff stretch

    Murky Deep, Jan 14, 2026 ... 2 3
    Replies:
    30
    Views:
    1,108
    Milehog
    Jan 17, 2026
  26. Squidly-Diddly

    what is the inside scoop on big Baltimore bridge crash?

    Squidly-Diddly, Mar 26, 2024 ... 7 8 9
    Replies:
    120
    Views:
    21,458
    jehardiman
    Jan 13, 2026
  27. RSD

    Did the naval architect screw up?

    RSD, Aug 23, 2025 ... 2
    Replies:
    25
    Views:
    3,122
    TeddyDiver
    Jan 12, 2026
  28. Daruma

    Foil Design Software

    Daruma, Jan 11, 2026
    Replies:
    1
    Views:
    436
    wet feet
    Jan 11, 2026
  29. Skunkworkz

    Michalak QT powered skiff

    Skunkworkz, Jan 1, 2026 ... 2
    Replies:
    15
    Views:
    1,220
    BlueBell
    Jan 11, 2026
  30. noahs_ark2010

    Row/ motor tender conversion

    noahs_ark2010, Jan 9, 2026
    Replies:
    10
    Views:
    484
    noahs_ark2010
    Jan 11, 2026
  31. Milton best

    The Aluminum Unicorn

    Milton best, Dec 25, 2025 ... 2
    Replies:
    25
    Views:
    1,674
    comfisherman
    Jan 3, 2026
  32. fpjeepy05

    Name for plan view transom notch around an outboard

    fpjeepy05, Aug 29, 2025
    Replies:
    10
    Views:
    3,208
    fallguy
    Jan 3, 2026
  33. Eurosnob

    Design Breakthrough! Ideal helm station layout

    Eurosnob, Dec 27, 2025
    Replies:
    3
    Views:
    579
    Eurosnob
    Jan 3, 2026
  34. jmwoodring

    The "run angle" of a schooner hull form

    jmwoodring, Dec 31, 2025
    Replies:
    11
    Views:
    612
    philSweet
    Jan 1, 2026
  35. brian eiland

    Sailing Fast, history & future endeavors

    brian eiland, Dec 31, 2025
    Replies:
    3
    Views:
    429
    brian eiland
    Jan 1, 2026
  36. fpjeepy05

    Aluminum Skiff

    fpjeepy05, Jun 23, 2025 ... 2 3
    Replies:
    37
    Views:
    6,948
    Cajunpockettunnel
    Dec 30, 2025
  37. Silvard

    Looking for a long range expedition aluminum power catamaran design

    Silvard, Mar 20, 2025 ... 5 6 7
    Replies:
    92
    Views:
    16,318
    Eurosnob
    Dec 26, 2025
  38. fluknick

    Question, NACA Foil in CNC flexible foam

    fluknick, Dec 23, 2025
    Replies:
    4
    Views:
    539
    BlueBell
    Dec 24, 2025
  39. Jeff Fasbender

    Contemplating Building a Trawler

    Jeff Fasbender, Oct 5, 2018 ... 2
    Replies:
    25
    Views:
    9,190
    MotorCityBW
    Dec 24, 2025
  40. BazzaOz

    Jet Boat design

    BazzaOz, May 4, 2020 ... 2 3
    Replies:
    41
    Views:
    34,846
    Laurence Bellamy
    Dec 24, 2025
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