Real-time ship stability evaluation program through deterministic method based on second-generation intact stability

Abstract

IMO suggests Second-Generation Intact Stability Criterion (SGISC), which consists of five failure modes, because of continuous accidents due to a lack of ship stability. In this study, Level 1 and Level 2 stability of SGISC were evaluated for three stability failure modes (Dead Ship Condition, Surf-riding, and Excessive Acceleration). Level 1 was calculated in the same way as the second-generation intact stability calculation method, and Level 2 was calculated in a deterministic manner by using a real-time maritime environment rather than a probabilistic approach for all maritime environments. Based on this, a program was developed to visualize dangerous and safe areas on a map. Using the developed program, it is expected that SGISC can be used not only in the design stage, but also in the operation stage of ships, such as route planning or selection of operating locations in the ocean.

Keywords

• Second generation intact stability criteria
• Ship stability
• Dead-ship condition
• Surf-riding
• Excessive acceleration