Towing dynamics of a liferaft and fast rescue craft in a surface wave

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DOIResolve DOI: http://doi.org/10.1016/j.oceaneng.2008.03.009
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TypeArticle
Journal titleOcean Engineering
Volume35
Issue11-12
Pages12521258; # of pages: 7
SubjectLiferaft; Fast rescue craft; Towing; Coupled dynamics
AbstractThe equations of motion for the coupled dynamics of a small liferaft and fast rescue craft in a surface wave are formulated in two dimensions using the methods of Kane and Levinson [1985. Dynamics: Theory and Applications. McGraw-Hill Inc., New York]. It is assumed that the motion normal to the wave surface is small and can be neglected, i.e. the bodies move along the propagating wave profile. The bodies are small so that wave diffraction and reflection are negligible. A Stokes second order wave is used and the wave forces are applied using Morison's equation for a body in accelerated flow. Wind loads are similarly modelled using drag coefficients. The equations are solved numerically using the Runge?Kutta routine ?ode45? of MATLAB®. The numerical model provides guidelines for predicting the tow loads and motions of small craft in severe sea states.
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
IdentifierIR-2008-16
NRC number6576
NPARC number8895132
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Record identifiercbfa49eb-55d5-44d2-b4a3-20bbefd3148e
Record created2009-04-22
Record modified2016-05-09
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