Stability

Discuss stability issues and calculations, power and sail.

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  1. Guillermo

    Seaworthiness

    Guillermo, Nov 26, 2006 ... 75 76 77
    Replies:
    1,140
    Views:
    373,502
    Guillermo
    Jun 7, 2011
  2. Guillermo

    Sailing boats' Stability, STIX and Old Ratios

    Guillermo, Sep 3, 2006 ... 25 26 27
    Replies:
    393
    Views:
    332,589
    hoytedow
    Feb 14, 2021
  3. Antonio Alcalá

    The roll acceleration: What´s the best for crossing oceans?

    Antonio Alcalá, Dec 18, 2007 ... 8 9 10
    Replies:
    146
    Views:
    220,035
    dougfrolich
    Feb 25, 2013
  4. Crag Cay

    Bourbon Dolphin capsizes

    Crag Cay, Apr 12, 2007 ... 43 44 45
    Replies:
    670
    Views:
    195,960
    dougfrolich
    Oct 1, 2009
  5. ali3

    Smallest boat to sail ocean safely?

    ali3, Aug 15, 2011 ... 2 3 4
    Replies:
    50
    Views:
    177,493
    GTO
    Sep 4, 2011
  6. smartbight
    Locked

    Costa Concordia, 80 deg list, really scary !!

    smartbight, Jan 15, 2012 ... 31 32 33
    Replies:
    484
    Views:
    123,224
    Boat Design Net Moderator
    Sep 23, 2013
  7. junk2lee
    Locked

    Swain BS_36 Stability curve

    junk2lee, Mar 9, 2011 ... 32 33 34
    Replies:
    497
    Views:
    97,315
    Boat Design Net Moderator
    May 29, 2011
  8. Mr.Design

    Buoyancy and Floatation calcs

    Mr.Design, Jun 5, 2007
    Replies:
    7
    Views:
    59,614
    JRD
    Oct 2, 2011
  9. Squidly-Diddly

    South Korean ferry MV Sewol flips, 1/2 sunk in shallows, people trapped.....

    Squidly-Diddly, Apr 17, 2014 ... 11 12 13
    Replies:
    193
    Views:
    49,620
    jehardiman
    Apr 18, 2019
  10. millionswords

    Small Kayak - Under 13 feet - Stability?

    millionswords, Dec 16, 2008 ... 5 6 7
    Replies:
    98
    Views:
    49,173
    millionswords
    Mar 13, 2009
  11. Valk

    How do I calculate displacement from weight?

    Valk, Jul 3, 2007 ... 2
    Replies:
    15
    Views:
    48,349
    lewisboats
    Jul 8, 2007
  12. jrl5678

    8 foot wide shanty boat

    jrl5678, May 4, 2007 ... 2 3
    Replies:
    43
    Views:
    48,228
    jrl5678
    Jul 21, 2007
  13. Toot

    Water Ballast for small boats

    Toot, Sep 24, 2006 ... 5 6 7
    Replies:
    94
    Views:
    47,688
    doug kay
    Nov 8, 2007
  14. michael pierzga

    Yacht Yogi sinks

    michael pierzga, Feb 17, 2012 ... 5 6 7
    Replies:
    101
    Views:
    43,185
    trafalgar
    Feb 26, 2013
  15. cenej

    Ballast/Dsplacement Ratio

    cenej, Jan 12, 2008 ... 2
    Replies:
    17
    Views:
    42,852
    Guillermo
    Jan 15, 2008
  16. VanDamage007

    When adding a 2nd level to a pontoon...

    VanDamage007, May 25, 2009
    Replies:
    13
    Views:
    41,605
    jsupperdecks
    Sep 27, 2014
  17. Antonio Alcalá

    Let´s be practical. Are we in the right way?

    Antonio Alcalá, Nov 6, 2007 ... 7 8 9
    Replies:
    128
    Views:
    37,726
    Guillermo
    Jan 30, 2008
  18. christoph

    How much weight can my pontoons hold at half emersion?

    christoph, Jan 31, 2010 ... 2
    Replies:
    22
    Views:
    37,165
    Submarine Tom
    May 16, 2010
  19. Sachi

    Boat Capsize Evidence

    Sachi, Oct 10, 2009 ... 13 14 15
    Replies:
    222
    Views:
    34,313
    Tad
    Dec 20, 2010
  20. Tinklespout

    Bolger diablo vs. Tolman skiff vs. Panga

    Tinklespout, Dec 24, 2012 ... 2 3
    Replies:
    31
    Views:
    33,847
    liki
    Jan 21, 2013
  21. peter radclyffe

    cheeky rafiki

    peter radclyffe, May 21, 2014 ... 5 6 7
    Replies:
    104
    Views:
    33,496
    HydroNick
    Jul 15, 2017
  22. athvas

    Stability calc in excel.........

    athvas, Aug 21, 2013 ... 2
    Replies:
    27
    Views:
    33,450
    CDBarry
    Aug 27, 2015
  23. CatBuilder

    Stability of Strange Canadian Boat (pictures inside)

    CatBuilder, Sep 11, 2010 ... 3 4 5
    Replies:
    66
    Views:
    32,228
    Tad
    Mar 26, 2012
  24. HaveANiceDay

    How to make a GZ curve if you know GM?

    HaveANiceDay, Feb 25, 2012 ... 2
    Replies:
    28
    Views:
    32,190
    HaveANiceDay
    Feb 27, 2012
  25. alrod

    Trawler questions

    alrod, Dec 5, 2008 ... 2 3
    Replies:
    44
    Views:
    32,157
    FAST FRED
    Nov 21, 2014
  26. Paul Jones

    Metacentric Height

    Paul Jones, May 1, 2009 ... 2 3
    Replies:
    39
    Views:
    30,847
    Ad Hoc
    Sep 11, 2009
  27. yoram

    v-shape vs flat bottom vs round shape

    yoram, May 15, 2011 ... 2
    Replies:
    18
    Views:
    29,859
    river runner
    Aug 5, 2011
  28. Boo2

    Carter 33 ballast ratio and stability questions

    Boo2, Jan 30, 2010 ... 2
    Replies:
    22
    Views:
    28,857
    P D Niggli
    Dec 1, 2013
  29. mig74

    chine walking

    mig74, May 17, 2007 ... 2
    Replies:
    29
    Views:
    28,802
    smokeonthewater
    May 25, 2008
  30. tony1177

    10ft flatbottom aluminum jon boat

    tony1177, Apr 25, 2010
    Replies:
    9
    Views:
    26,163
    WickedGood
    May 21, 2010
  31. 14ft

    will a platform make it more stable

    14ft, Apr 5, 2011
    Replies:
    12
    Views:
    25,263
    thedutchtouch
    Apr 23, 2011
  32. conceptia

    Anti-Rolling Tank

    conceptia, May 24, 2010 ... 2 3 4
    Replies:
    46
    Views:
    25,067
    Rurudyne
    Jul 10, 2018
  33. DCockey

    Gerr's Roll Period Recommendation

    DCockey, Jun 20, 2011 ... 4 5 6
    Replies:
    75
    Views:
    24,678
    TeddyDiver
    Jun 29, 2011
  34. Big Dav

    New guy and I have a question about flotation pods.

    Big Dav, Oct 25, 2007
    Replies:
    10
    Views:
    24,605
    Big Dav
    Oct 29, 2007
  35. regulus

    Displacement vs weight

    regulus, Jan 21, 2008
    Replies:
    4
    Views:
    23,167
    Jratte
    Jan 22, 2008
  36. petlily

    Philosophy of Self-righting

    petlily, Nov 23, 2009
    Replies:
    11
    Views:
    22,810
    Submarine Tom
    Nov 24, 2009
  37. pafree

    add jon boat pods (side and rear)

    pafree, Apr 29, 2009
    Replies:
    4
    Views:
    21,769
    mudman
    May 6, 2009
  38. athvas

    Calculation of draft and trim

    athvas, Dec 26, 2013
    Replies:
    14
    Views:
    21,471
    athvas
    Dec 28, 2013
  39. orang laut

    Hull displacement calculation

    orang laut, Nov 14, 2006
    Replies:
    9
    Views:
    21,288
    singleprop
    Mar 21, 2008
  40. zurk
    Locked

    Making this boat self righting.

    zurk, Apr 22, 2014 ... 4 5 6
    Replies:
    77
    Views:
    21,141
    Boat Design Net Moderator
    Apr 25, 2014
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