Small Ro/Pax Vessel stability study

Henrik Erichsen, Hans Otto Holmegaard Kristensen, Jørgen Juncher Jensen, Erik I. Tvedt

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


In 2009 new damage stability requirements for passenger ships based on a probabilistic method were adopted by IMO and are now part of the current SOLAS Chapter II-1 regulations (SOLAS 2009). The mandate from IMO was to keep the same safety level as inherent in the old deterministic damage stability regulations in SOLAS (SOLAS 90). During the rule development prior to the adoption, it was argued that the safety level for large passenger ships should be increased, but small ro/pax vessels were only rudimentarily looked at and small vessels with very high attained index were seen as “non-representative”. Currently there is a renewed debate in IMO regarding the required damage stability safety level for passenger ships. The damage stability safety level for small ro/pax vessels has also been discussed outside of the IMO assuming that the damage stability safety level for small ro/pax designs is perhaps not sufficient, i.e. that the current safety level according to SOLAS 2009 is less than the old safety level according to SOLAS 90. In order to establish a solid foundation for the discussion, this study was made possible by a grant from The Danish Maritime Fund. The study focus on small ro/pax vessels in a range from 32 m to 100 m in length and 100 to 600 passengers/persons, and the outcome of this study is described in details in this document.
Original languageEnglish
Title of host publicationProceedings of the World Maritime Technology Conference
Number of pages20
PublisherSociety of Naval Architects and Marine Engineers
Publication date2015
Publication statusPublished - 2015
EventWorld Maritime Technology Conference 2015 - Rhode Island Convention & Omni Hotel, Providence, Rhode Island, United States
Duration: 3 Nov 20157 Nov 2015


ConferenceWorld Maritime Technology Conference 2015
LocationRhode Island Convention & Omni Hotel
Country/TerritoryUnited States
CityProvidence, Rhode Island
Internet address


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