A New Approach to Damage Stability Rule : 1st Report : Discussion on the present rules and the concept of the new approach

Abstract

The present Deterministic and Probabilistic damage stability rules for ships, their drawbacks and a concept of a new approach are discussed in this paper. In the proposed approach, safety level is varied using a survivable damage opening size. All the damages causable by damage openings of sizes upto this survivable damage opening size should be survived by a ship in the maximum sea state it has to operate. The survivability criteria should also take into account the static and dynamic effects of flooded/trapped water. The survivable damage opening size varies with the degree of safety, damage statistics, structural strength of ship, etc.