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Lookup NU author(s): Professor Kadir Sarioz, Professor Mehmet Atlar, Professor Michael Woodward, Dr Rod Sampson
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Methods are described for the evaluation of the seakeeping performance of a fast RoPax vessel driven by podded propulsors in the North Sea environment. The evaluation procedure is based on the responses of the vessel in regular waves, the wave conditions encountered, and the limiting values associated with the vessel's mission. The seakeeping performance is represented by the average attainable speed (AAS), which is defined as the ratio of the average speed of the vessel on a specified route to the calm water speed. Both the natural (due to the added wave resistance) and the voluntary (due to the excessive ship responses) speed losses are taken into account. The annual average speed of the fast RoPax design in the North Sea is evaluated and compared with that of a similar size conventional RoPax vessel. The results indicate that, despite its 20 per cent smaller displacement, the fast RoPax design, in general, has better seakeeping performance characteristics than that of the conventional design. The effect of podded propulsors on the average annual speed is also investigated and it is found that the presence of podded propulsors can have favourable effects on the seakeeping performance characteristics, particularly on the vertical plane responses. © IMechE 2005.
Author(s): Sarioz K, Atlar M, Sarioz E, Woodward MD, Sampson R
Publication type: Article
Publication status: Published
Journal: Proceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment
Year: 2005
Volume: 219
Issue: 1
Pages: 37-46
ISSN (print): 1475-0902
ISSN (electronic): 2041-3084
Publisher: Professional Engineering Publishing Ltd.
URL: http://dx.doi.org/10.1243/147509005X10477
DOI: 10.1243/147509005X10477
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