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Full-Scale Seakeeping Trials of an All-Weather Lifeboat

Lookup NU author(s): Dr Federico Prini, Dr Simon Benson, Professor Richard Birmingham, Professor Bob Dow


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The Severn class of the Royal National Lifeboat Institution (RNLI) has recently undergone extensive sea trials as part of collaborative research with Newcastle University and Lloyd’s Register. The scope of the trials was to investigate the seakeeping behaviour of the craft in real operational conditions. A Severn lifeboat was fitted with a number of sensors to measure hull girder loads and local loads due to wave and slamming. Time-domain and spectral analyses were applied to the data collected and the first results are presented. The Response Amplitude Operators (RAOs) of vertical bending moment are also compared against numerical predictions. As part of a major plan that combines numerical methods and experiments to investigate the sea loads sustained by the structure during operation, the sea trials contribute to validating the wave loads predicted numerically and allow to account for slamming-induced load effects.

Publication metadata

Author(s): Prini F, Benson S, Birmingham RW, Dow RS, Ferguson LJ, Sheppard PJ, Phillips HJ, Johnson MC, Mediavilla Varas J, Hirdaris S

Editor(s): The Royal Institution of Naval Architects

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: SURV9 Conference: Surveillance, Pilot & Rescue Craft

Year of Conference: 2018

Online publication date: 18/04/2018

Acceptance date: 27/03/2018

Date deposited: 27/03/2018

Publisher: The Royal Institution of Naval Architects