In the design of an anti-rolling tank, deciding an effective tank form and finding out the suitable location of the tank are a very difficult problem under the restriction of the tank arrangements already fixed. Therefore, it is most important to obtain as good tank effect as possible by designing the tank and the structure member form carefully under the difficult circumstances. This report is on the Frahm type anti-rolling tank with two wing tanks for a passenger/car ferry of Lpp = 190 m and B = 27 m. Details of the tank design and the results of bench tests are described.
