Trim and Stability Update

Before you cut steel and start modifying your vessel, consider ship stability.  If you forget about stability, modifications may make your ship unsafe for sea. 

I have seen owners completely repower their vessels and ignore stability.  Afterwards, they discovered that the vessel could not pass inspection, all due to ship stability.  Don’t get caught by surprise.  Plan for ship stability and control the changes.

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After every major vessel modification, you generally need to update the vessel’s stability documentation.  With only a 2% change in light ship weight, a stability test may become necessary.  For many vessels regulated by the US Coast Guard, it becomes required. (See MTN 04-95.)

After the stability test, you need a new stability analysis and an updated trim and stability booklet.  Our services include many different forms of stability analysis.

  1. Intact stability
  2. Passenger vessel stability
  3. Subdivision draft / Load line calculation
  4. Damage stability
  5. Probabilistic damage stability
  6. Longitudinal strength
  7. Stability improvements

We provide stability analysis that clearly identifies the chain of applicable regulations and outlines your requirements.  Critical points are identified, and we provide recommendations for any small changes that may improve vessel stability.

FREE Loading Condition Spreadsheet

DMS also cares about delivering practical utility to the vessel crew.  Ultimately, stability analysis should be a tool for the vessel master to ensure safe operation.  The best tools are easy to use and convenient.  Along with the trim and stability update, we also provide a free loading condition spreadsheet.  This incorporates your custom tank properties and MaxVCG curves.  It allows you to easily develop custom loading conditions for yourself.

Plan your own burn-ballast sequence for each voyage.  Safely check transfers between tanks.  Other firms may charge you tens of thousands for a fancy program that achieves the same functionality.  But at DMS, we think the knowledge is more important than the appearance.  That is why we automatically include the loading condition spreadsheet when developing a trim and stability booklet.  Want to learn more about your free loading condition spreadsheet?  We’re happy to talk.

The fine print:

  1. Loading condition spreadsheet is NOT a substitute for a class approved loading computer.  It is only a convenient tool for the vessel master.
  2. Stability update requires a full trim and stability booklet to provide a free loading condition spreadsheet.  Stability letters and stability assessments do not receive a free loading condition spreadsheet.

Want to Learn More

Ready to discuss your next project.  DMS is ready to join your team.

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