Overview of Model Test Procedures for Stability Under Dead Ship Condition and Pure Loss of Stability in Astern Waves

Abstract

For facilitating the development of the guidelines for direct stability assessment as a part of the second generation intact stability criteria at the International Maritime Organization (IMO), this paper provides examples of comparison between model experiments and numerical simulations for stability under dead ship condition and pure loss of stability in astern waves. As a result, some essential elements for proper validation were identified. For dead ship stability, a good selection of representative wind velocity generated by wind fans is crucial. For pure loss of stability, accurate Fourier transformation and reverse transformation of incident irregular waves are essential. These remarks were partly utilised in the interim guidelines as finalised in 2020.