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A comparison of the motions of trimarans, catamarans and monohulls

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Davis, MR and Holloway, DS 2007 , 'A comparison of the motions of trimarans, catamarans and monohulls' , Australian Journal of Mechanical Engineering, vol. 4, no. 2 , pp. 183-195 .

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Abstract

The seakeeping motions of catamarans and trimarans are computed using a time domain seakeeping method, which has been accurately validated across a range of Froude numbers from 0.2 to 0.8. Both vertical and horizontal accelerations are evaluated. No motion controls are fitted. It is found that the rolling of a trimaran increases as the buoyancy in the outboard hulls is reduced, and exceeds the rolling of an equivalent catamaran by a factor of two when 5% of the total displacement is in the outboard hulls. In head seas, the greater length of the trimaran reduces the maximum heave motions relative to wave height as a consequence of the reduced length-based Froude number.

Item Type: Article
Authors/Creators:Davis, MR and Holloway, DS
Journal or Publication Title: Australian Journal of Mechanical Engineering
Publisher: Engineers Media
ISSN: 1448-4846
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