Investigation of Dead Ship Condition for a Naval Ship within the Framework of 2 nd Generation Stability Criteria

Doğancı A., Çakıcı F.

4th International Symposium on Naval Architecture and Maritime, İstanbul, Turkey, 11 - 13 October 2023, pp.1-10

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.1-10
  • Yıldız Technical University Affiliated: Yes


There are 5 failure modes in SGISC (Second Generation Intact Stability Criteria) developed by SDC (Sub-committee On Ship Design and Construction), a sub-committee of IMO (International Maritime Organization). These are parametric roll, pure loss of stability, surf riding and broaching, dead ship condition and excessive acceleration. While parametric roll and pure loss of stability are related to the righting arm variations, broaching is due to the maneuver. Dead ship condition and excessive acceleration are considered severe weather criteria. In this study, firstly, information was given about the level 1 and level 2 evaluation procedures for dead ship status. When the severe weather criterion related to the GZ curve is not met by the relatively simple calculation level 1 criterion, the level 2 criterion, which deals with hydrodynamic states in waves, is presented. Level 1 and level 2 calculations are performed step by step for a benchmark container ship to understand whether it is vulnerable or invulnerable to dead ship conditions. After validating its invulnerability according to level 1 and level 2, the same process was followed for a naval ship form.