The rolling period test must not be used to assess stability in a critical situation, i.e., close to the stability limit.
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Check out the "Rolling Period Test" app on Google Play or Amazon App Store, developed by "ESchoTNav". This app is a very helpful tool for navigational watchkeeping officers during cargo operations, offering a convenient way to perform rolling period tests on the go. It's free now and doesn't include ads.
If you're using an Android device, click the button below to download it directly from the Google Play Store. If you're on a different device, you can still visit the link to learn more and install it later on your Android device.
Coming Soon: We are excited to announce that the app will also be available for iPhone users soon. Stay tuned for updates!
The Rolling Period Test is a stability test used to assess the transverse stability of vessels, particularly smaller ships and boats. This test helps determine the natural rolling period of a vessel, which is the time it takes for the vessel to complete one full oscillation (roll to one side, then to the other, and back to the original position).
It is an imprecise method for determining the initial metacentric height of a ship. However, it can be used for an approximate determination of the initial stability."