Ship stability
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Calculating ship stability is a fundamental aspect of ship architecture, ensuring that vessels can safely endure various conditions at sea. Stability involves assessing the balance and buoyancy of a vessel, taking into account factors such as weight distribution and environmental forces. Accurate ship stability calculations are critical for maintaining safety, compliance with maritime regulations, and optimal performance. The advanced tools and methodologies we developed at SARC are ideal for performing these calculations efficiently and effectively.

Ship stability analysis software
Our stability analysis software is designed to optimize ship design by providing precise and comprehensive stability calculations. This software, including solutions like PIAS, offers naval architects the ability to simulate different loading conditions, environmental factors, and operational scenarios to ensure the vessel’s stability under all circumstances. The stability analysis software allows for detailed evaluations of a vessel’s performance, identifying potential stability issues before they become critical. By utilizing this software, ship designers can make informed decisions that enhance the safety, efficiency, and reliability of their vessels. The integration of advanced algorithms and user-friendly interfaces makes our stability analysis software an indispensable tool for modern naval architecture.
| Damage stability | Hull form design | Draft survey |
From design to daily operation, our software keeps ship stability insightful and under control.

Inquire about our innovative solutions
SARC’s team of experts is ready to provide you with the best software for the analysis of ship stability. Don’t miss the opportunity to leverage our advanced software for superior maritime safety and performance. Reach out to us now and take the first step towards excellence in ship stability analysis.
What does ship stability involve?
Ship stability describes the ability of a vessel to return to an upright position after it has been heeled by external forces. These are the main aspects:
| Centre of gravity Determining the vertical centre of gravity from the lightship weight and the loading condition. |
Metacentric height Calculating GM, a key measure of initial stability. |
Righting lever curve Calculating the GZ curve to assess stability at larger angles of heel. |
| Stability criteria Checking the results against the applicable intact stability criteria. |
Inclining experiment Verifying the lightship weight and centre of gravity, supported by our measuring instruments. |
Damage stability Assessing stability after flooding with our damage stability calculations. |
Our software and services for ship stability
| PIAS Complete ship design software, from hull modelling to stability and strength calculations. Discover PIAS |
LOCOPIAS Onboard loading software based on PIAS’ proven technology, for seagoing and inland vessels. Discover LOCOPIAS |
Hardware Measuring instruments for draft surveys and inclining experiments. View our hardware |
| Services Prefer to outsource the work? Our engineers carry out the calculations for you. View list of services |
PIAS menu Choose exactly the stability modules your project needs. View the PIAS menu |
Companies that rely on our stability software
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Frequently asked questions about ship stability
What is ship stability?
Ship stability is the ability of a vessel to return to an upright position after being heeled by forces such as wind, waves or shifting cargo.
What is the difference between intact and damage stability?
Intact stability concerns an undamaged vessel. Damage stability looks at a vessel with one or more flooded compartments. Read more about damage stability calculations.
Can I check stability on board?
Yes. With our loading software LOCOPIAS, the crew checks stability for every loading condition on board.
Can SARC carry out stability calculations for me?
Yes. Our engineers can carry out the calculations, including stability booklets. See our services.
How do I request a quote?
Send us a message via the contact form, email sarc@sarc.nl or call +31 85 040 90 40. We will send you a tailored proposal.









