Stability

Discuss stability issues and calculations, power and sail.

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  1. LeoKa

    Rolly custom steel motorboat

    LeoKa, Sep 2, 2024 ... 3 4 5
    Replies:
    62
    Views:
    5,169
    LeoKa
    Jun 30, 2025 at 9:24 PM
  2. Will Gilmore

    The Self-righting Tetrahedron

    Will Gilmore, Jun 26, 2025 at 12:40 AM
    Replies:
    1
    Views:
    402
    mc_rash
    Jun 26, 2025 at 4:54 AM
  3. Gabe Long

    Reinforcing dinghy gunwale

    Gabe Long, Jun 12, 2025
    Replies:
    11
    Views:
    429
    gonzo
    Jun 20, 2025
  4. Andrew Pintar

    ISO 12217-1 Worksheet 4 Question

    Andrew Pintar, Jun 14, 2025
    Replies:
    7
    Views:
    397
    TANSL
    Jun 16, 2025
  5. Tacothebell

    Outriggers on small watercraft

    Tacothebell, Jun 10, 2025
    Replies:
    9
    Views:
    296
    Tacothebell
    Jun 12, 2025
  6. DogCavalry

    Barge to carry a single pick-up truck

    DogCavalry, Sep 9, 2023 ... 8 9 10
    Replies:
    140
    Views:
    21,200
    DogCavalry
    May 16, 2025
  7. Hamza

    Hull From Catia To Maxsurf

    Hamza, May 11, 2025
    Replies:
    3
    Views:
    455
    TANSL
    May 13, 2025
  8. pha7env

    Paravane build suggestions?

    pha7env, Apr 28, 2025
    Replies:
    3
    Views:
    555
    comfisherman
    May 2, 2025
  9. rsrguy3

    Which one or... just get pwcs?

    rsrguy3, Apr 27, 2025
    Replies:
    6
    Views:
    857
    rsrguy3
    Apr 29, 2025
  10. David Allen

    New daggerboard for Potter 19

    David Allen, Feb 24, 2011 ... 2
    Replies:
    17
    Views:
    14,429
    Judy Blumhorst
    Apr 28, 2025
  11. mc_rash

    Body rotation

    mc_rash, Apr 18, 2025 ... 2 3
    Replies:
    40
    Views:
    1,955
    TANSL
    Apr 21, 2025
  12. Jure

    Max steady heel angle to prevent downflooding in squalls

    Jure, Mar 17, 2025
    Replies:
    8
    Views:
    1,076
    ropf
    Apr 1, 2025
  13. Robert D

    Adding Ballast to Daggerboard

    Robert D, Nov 29, 2024 ... 2 3 4
    Replies:
    45
    Views:
    4,520
    BlueBell
    Feb 20, 2025
  14. adel sallem

    Weather criteria

    adel sallem, Feb 3, 2025
    Replies:
    6
    Views:
    860
    Ad Hoc
    Feb 5, 2025
  15. masswork

    Simultaneous effect of wind and special personnel crowding

    masswork, Jan 29, 2025
    Replies:
    1
    Views:
    684
    TANSL
    Feb 3, 2025
  16. sun

    How to theoretically calculate the floating state and stability of a complex floating body in differ

    sun, Aug 3, 2024 ... 2
    Replies:
    18
    Views:
    2,739
    gonzo
    Jan 23, 2025
  17. Stephen Ditmore

    The ISO 12217 Stability Series is currently under revision

    Stephen Ditmore, Jan 1, 2025
    Replies:
    8
    Views:
    1,313
    Stephen Ditmore
    Jan 2, 2025
  18. Don McDermott

    Changing dimensions/effect on stability

    Don McDermott, Dec 15, 2024 ... 2
    Replies:
    18
    Views:
    2,179
    Don McDermott
    Dec 22, 2024
  19. Shilby Wright

    10 meter resort powerboat

    Shilby Wright, Dec 17, 2024
    Replies:
    4
    Views:
    727
    TANSL
    Dec 19, 2024
  20. naserrishehri

    LOADICATOR

    naserrishehri, Nov 12, 2024
    Replies:
    9
    Views:
    1,398
    mc_rash
    Nov 20, 2024
  21. rwatson

    "Parbuckle" Capsize recovery technique

    rwatson, Nov 4, 2024
    Replies:
    5
    Views:
    1,097
    BlueBell
    Nov 14, 2024
  22. James Wellington

    Catamaran work boats in rough seas

    James Wellington, Nov 4, 2024
    Replies:
    10
    Views:
    1,457
    Ad Hoc
    Nov 12, 2024
  23. naserrishehri

    Large list time before capsizing

    naserrishehri, Sep 23, 2024 ... 2 3
    Replies:
    30
    Views:
    3,362
    gonzo
    Nov 6, 2024
  24. Alan Cattelliot

    Baby trapped in Florida

    Alan Cattelliot, Oct 21, 2024
    Replies:
    14
    Views:
    1,892
    Alan Cattelliot
    Nov 6, 2024
  25. Paavo

    Origin of the 1,4 factor in dynamic stability weather criteria?

    Paavo, Feb 21, 2024
    Replies:
    8
    Views:
    2,835
    BlueBell
    Aug 21, 2024
  26. sun

    Understanding will struggle, how do these products ensure the stability of the human body?

    sun, Jul 29, 2024
    Replies:
    4
    Views:
    1,182
    sun
    Aug 3, 2024
  27. rwatson

    Multihulls in Hurricane Beryl - News from Carriacou

    rwatson, Jul 18, 2024
    Replies:
    3
    Views:
    1,749
    C. Dog
    Jul 20, 2024
  28. Teemu Visakko

    Is there a way to make my trawler boat more stable?

    Teemu Visakko, Jul 14, 2024
    Replies:
    12
    Views:
    2,356
    Milehog
    Jul 17, 2024
  29. mc_rash

    ISO 12217-3 simplified offset-load test

    mc_rash, Jun 14, 2024 ... 2
    Replies:
    24
    Views:
    3,250
    TANSL
    Jun 20, 2024
  30. Jure Bebic

    IS Code, weather criterion

    Jure Bebic, Jun 11, 2024
    Replies:
    5
    Views:
    1,736
    Lopolito
    Jun 12, 2024
  31. Yusuf Rosidy

    Limiting KG problem

    Yusuf Rosidy, Jun 8, 2024 ... 2
    Replies:
    15
    Views:
    2,901
    Yusuf Rosidy
    Jun 9, 2024
  32. Chriss95

    Large Angle of Stability with Maxsurf

    Chriss95, Jun 3, 2024
    Replies:
    8
    Views:
    1,852
    Chriss95
    Jun 3, 2024
  33. wroc

    Metacentric height and roll period VS inertia

    wroc, May 28, 2024
    Replies:
    4
    Views:
    2,104
    wroc
    May 28, 2024
  34. Arteaga27

    ISO 12217-1 Calculation Swamped Stability and Buoyancy Test

    Arteaga27, Mar 21, 2024
    Replies:
    5
    Views:
    3,087
    TANSL
    May 2, 2024
  35. Sanket

    Stability

    Sanket, Mar 21, 2024
    Replies:
    0
    Views:
    1,217
    Sanket
    Mar 21, 2024
  36. liyko

    Heeling due to wind

    liyko, Mar 16, 2024
    Replies:
    12
    Views:
    3,363
    TANSL
    Mar 17, 2024
  37. Istria

    Stability of multihull 'raft' design with high CG

    Istria, Oct 16, 2023 ... 2
    Replies:
    27
    Views:
    6,777
    BlueBell
    Feb 15, 2024
  38. Hussein Atwi

    Barge Stability

    Hussein Atwi, Apr 12, 2019 ... 2
    Replies:
    29
    Views:
    16,592
    Dave G 9N
    Jan 27, 2024
  39. dustman

    How to make a catamaran immune to capsize?

    dustman, Nov 29, 2023
    Replies:
    10
    Views:
    3,869
    skaraborgcraft
    Dec 1, 2023
  40. Greifnation

    Extra boyancy

    Greifnation, Nov 11, 2023
    Replies:
    5
    Views:
    2,604
    gonzo
    Nov 13, 2023
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