Damage stability

Discussion in 'Stability' started by nithinkutty353, Feb 6, 2017.

  1. nithinkutty353
    Joined: Feb 2017
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    Location: KERALA,INDIA

    nithinkutty353 New Member

    Hi...
    I am currently working on a project on numerical investigations on damage stability on a vessel.
    I chose MAXSURF Stability module for doing the damage analysis.
    For validation of the study, I have to find equilibrium analysis of box cross-sectioned vessel with two interior tanks filled with liquid cargo and damage applied on one of the tanks.

    I need to whether it is possible to input specific damage on preferred locations and with specified dimensions in MAXSURF.
    Or suggest me a software to get the final equilibrium position of cargo filled vessels with damage.

    thank you.
     
  2. TANSL
    Joined: Sep 2011
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    TANSL Senior Member

    MaxSurf, and I suppose any other software, allows you to define the damage based on indicating which compartments have been flooded. No need, in my opinion, to define the size of the aperture. The designer must know the rules to properly define the possible damage cases for his boat.
     
  3. jehardiman
    Joined: Aug 2004
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    Location: Port Orchard, Washington, USA

    jehardiman Senior Member

    TANSL is correct here but there are changes in the wind. Generally at the present time, most damage sceinarios are based on a major allision or collision. Like the Costa Concordia or Andrea Doria damage will be massive and flooding will be immediate. However, the loss of the Rocknes and Explorer to fist sized holes and slow flood-up to eventual loss of stability had lead to a re-look at the rules. At this time, I only know of military ships that get this type of analysis (fragmentation perforation is real for a warship).

    So while most ships are designed so the flooding is assumed to fill the compartment to the damaged waterline, if you have some strange arrangement of tanks/loading it is you due dilligence to investigate those at several points during flood-up. Note that supercargos have broken the keels of tankers by improper loading or that engineers have caused loss of stability while washing ballast (MV Cougar Ace).
     
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