The Use of Inferential Statistics in Ships' Stability Analysis

摘要

A deterministic approach is traditionally performed for damage stability analysis on Navy ships, while commercial, ABS accredited, ships use Safety of Life At Sea (SOLAS) and International Maritime Organization (IMO) probability studies. SOLAS and IMO analyses provide an attained subdivision index, but do not allow the designer to determine the actual KG value required to survive damage a certain percentage of the time. In a deterministic approach one would have to analyze all cases to determine the passing percentage. The use of inferential statistics will allow one to determine the KG required for a ship to survive damage a certain percentage of time, or the percentage of cases that will meet the analyzed stability criteria at a particular KG, without having to analyze every damage case, and provides more detail than an attained subdivision index, as with SOLAS and IMO requirements.