Probabilistic Damage Stability Calculations in Preliminary Ship Design

The recent IMO Resolution MSC 19(58) points towards a more rational way of obtaining subdivisions in ships to ensure a sufficient stability in damage conditions. In the preliminary ship design phase it is important to know how the attained index and the possible oil outflow in a collision are influenced by the actual positions of the watertight bulkheads. This information should be given in form of sensitivity factors yielding the change in attained index and oil outflow for a unit reposition of user-defined bulkheads. A rational procedure to achieve this information is
developed.