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Resistance and wash measurements on a series of high speed displacement monohull and catamaran forms in shallow water

Record type: Article

The paper summarises an experimental investigation into the resistance and wash waves of high speed displacement monohulls and catamarans in shallow water.
Measurements of total resistance, running trim, sinkage and multiple longitudinal wave cuts were carried out for three round bilge hulls derived from the NPL series and one from Series 64. Parametric changes included length/displacement ratios of 7.4, 8.5 and 9.5, and hull separation/length ratios of 0.2, 0.4 and infinity. The tests were carried out in two depths of shallow water over a length Froude Number range of 0.25 to 1.0 and a depth Froude Number range of 0.5 to 3.0. The wave resistance was derived using wave pattern analysis and the principal particulars of the generated wave system are presented as maximum wave height, period, distribution of energy and direction of wave propagation.
The results of the investigation provide a better understanding of the performance of high speed displacement monohulls and catamarans in shallow water, including the influences of speed, water depth, hull separation and length/displacement ratio. The data derived are very suitable for design applications and for the validation of theoretical analyses of ship wave resistance and wash waves.

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Citation

Molland, A.F., Wilson, P.A., Taunton, D.J., Chandraprabha, S. and Ghani, P.A. (2004) Resistance and wash measurements on a series of high speed displacement monohull and catamaran forms in shallow water The Transactions of the Royal Institution of Naval Architects Part A: International Journal of Maritime Engineering, 146, (2), pp. 19-38. (doi:10.3940/rina.ijme.2004.a2.3604).

More information

Published date: 2004
Additional Information: IJME3604

Identifiers

Local EPrints ID: 22705
URI: http://eprints.soton.ac.uk/id/eprint/22705
ISSN: 1479-8751
PURE UUID: b1e49ba2-154d-48e5-a50a-cabe6ccc0561
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

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Date deposited: 22 Mar 2006
Last modified: 17 Jul 2017 16:21

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Contributors

Author: A.F. Molland
Author: P.A. Wilson ORCID iD
Author: D.J. Taunton
Author: S. Chandraprabha
Author: P.A. Ghani

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