Ship vibration and noise: Some topical aspects

^ The authors of this paper retain the right of subsequent publication, subject to the sanction of the Committee of Lloyd's Register. Any opinions expressed and statements made in this paper and in the subsequent discussions are those of the individuals and not those of Lloyd's Register. permitted under current legislation no part of this work may be photocopied, stored in a retrieval system, published, performed in public, adapted, broadcast, transmitted, recorded or reproduced in any form or means, without the prior permission of the copyright owner. Carlton trained initially as a mechanical engineer and upon completion of these studies he subsequently read for a degree in mathematics. After a period of time in the Royal Naval Scientific Service, where he was concerned with hydrodynamic research, he joined Stone Manganese Marine in 1969. During this time he was involved in the design of marine propellers and bow thrusters as well as undertaking research into propeller off-design performance. As the Senior Surveyor he is now involved in projects mostly related to investigations, problem solving and predictions of marine structure dynamic responses. He is also a member of the Royal Institution of Naval Architects. Synopsis The paper considers some topical aspects of noise and vibration in the shipboard environment. In particular, hydrodynamic and other sources of excitation are discussed in relation to their quantification, analysis and the assessment of the ship's response. Within the discussion comfort class rules are considered in relation to their ISO basis and application in the marine industry. Some comment is made concerning noise in relation to the external shipboard environment.