Wednesday, 23rd May 2007
National Physical Laboratory, Teddington

The Institute of Acoustics (IOA) held a one-day workshop on underwater radiated noise hosted by the National Physical Laboratory (NPL) on Wednesday, 23 May 2007. The meeting was organised by the Underwater Acoustics Group of the IOA with the support of the Society for Underwater Technology (SUT), NPL and QinetiQ.

The aim of the meeting was to increase awareness of the issues relating to underwater radiated noise and to illustrate current best practice for its measurement. The workshop consisted of a series of presentations by invited speakers with experience in the field. These presentations are now available for download. The presentations are listed below in the seminar's chronological order. Click on the title of the presentation for further details and to download a PDF copy of the presentation slides.

Disclaimer: Please note that the views and opinions expressed in the following presentations are solely those of the authors and are do not necessarily represent the views and opinions of NPL or the SUT.

• Underwater noise in the marine environment: Introduction to the issues   (2.16 MB)
  Stephen Robinson, National Physical Laboratory
• Learning lessons from airborne acoustics   (1.30 MB)
  Andrew Bullmore, Hoare Lea Consultants
• Estimation of underwater noise - learning lessons from air acoustics   (960 KB)
  Richard Hazelwood, R&V Hazelwood Associates LLP
• Underwater noise impacts: Myths and Marine Mammals   (1.34 MB)
  Stephen Jones, QinetiQ Ltd
• Underwater noise due to marine machinery   (3.13 MB)
  Dick Whitson and Alistair McKinnon, National Engineering Laboratory
• Acoustic Ranging Practice in the UK   (2 MB)
  Gregory Hassell, QinetiQ Ltd
• The dBht: a metric for assessing the behavioural and auditory effects of underwater noise   (2.83 MB)
  Jeremy Nedwell, Subacoustech Ltd
• Mitigation of noise impact: the use of soft starts, acoustic deterrents, and barrier methods   (4.07 MB)
  Paul Lepper, Loughborough University
• Monitoring of marine mammals: PAM and PAMGUARD software   (6.76 MB)
  John Hartley, Hartley Anderson Ltd
• Impact of noise on the marine environment - a regulatory perspective   (1.94 MB)
  Ron McHugh, Heriot Watt University