After an introduction in which the importance of noise and vibration control in ships is discussed, the Author (of B.S.R.A.) discusses the fundamentals of noise and its measurement, the generation and transmission of sound in ships, maximum permissible sound levels, and the relevant regulations in the U.K., West Germany, Sweden, Norway, and Denmark. Noise levels in existing ships and sources of these noises are noted. Vibration in ships, and its causes, human reactions, and effects on materials are briefly discussed. In the concluding remarks it is mentioned that roughly half of a wide range of ships sampled (of over 90 m length o.a.) exceed the typical sound levels specified in regulations and recommendations; conventional bulkheads and decks will not always comply with specified sound-insulation values. Special problems exist with small ships, and comprehensive acoustic treatment cannot always ensure compliance with regulations. The introduction of noise regulations and recommendations has stimulated research into noise prediction and reduction methods in many countries, including the U.K. For vibration, maximum amplitudes for acceptability have been suggested (the article includes a diagram of guidance amplitudes suggested by B.S.R.A.).

  • Supplemental Notes:
    • Paper presented at Conference on Vibration and Noise Levels in Ships.
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • Hoyland, A
  • Publication Date: 1976-10-21

Media Info

  • Features: References;
  • Pagination: 8 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00156275
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jun 22 1977 12:00AM