Advanced Damage Stability Analyses for Design of Cargo Ships

Daniel Lindroth*, Markus Tompuri, Pekka Ruponen, Makoto Haruyama, Aqmil Alway

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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While the development of stability regulations mainly has been driven by the needs for passenger ships, cargo ships are also getting an update in the newly adopted amendments to the Safety of Life at Sea (SOLAS) convention. The stability at intermediate flooding stages have previously been ignored for cargo ships, but if the ship is equipped with cross-flooding devices, intermediate filling phases will now be evaluated. In this study, the relevancy of these intermediate stages for cargo ships is investigated. The focus is on a case study of a short sea ro-ro cargo ship with cross-flooding ducts in the double bottom. In addition to the conventional regulatory calculation methods, also time-domain flooding simulation is used for realistic assessment of intermediate stages and the actual time-to-flood. Such tools have previously been used for damage stability analyses of passenger ships. The different calculation methods are compared against each other through the attained subdivision index. The results indicate that cross-flooding improves damage stability also for cargo ships, and that simulation is an applicable tool also for design and analysis of safer ships.

Original languageEnglish
Title of host publicationPractical Design of Ships and Other Floating Structures - Proceedings of the 14th International Symposium, PRADS 2019 - Volume 1
EditorsTetsuo Okada, Yasumi Kawamura, Katsuyuki Suzuki
Number of pages12
Publication statusPublished - 1 Jan 2021
MoE publication typeA4 Article in a conference publication
EventInternational Symposium on Practical Design of Ships and Other Floating Structures - Yokohama, Japan
Duration: 22 Sep 201926 Sep 2019
Conference number: 14

Publication series

NameLecture Notes in Civil Engineering
Volume63 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565


ConferenceInternational Symposium on Practical Design of Ships and Other Floating Structures
Abbreviated titlePRADS


  • Cross-flooding
  • Damage stability
  • Progressive flooding
  • Ro-ro cargo ship
  • Simulation


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