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Published online by Cambridge University Press: 23 November 2009
Commander Haines examines the more stringent navigational requirements of fishing vessels, reviews the instruments in use, both radio and acoustic, and discusses the significance of a number of navigational factors, such as speed over the ground when trawling and the avoidance of obstacles on the sea-bed. The paper was presented in London on 14 May 1975 with the President, G. E. Beck in the Chair.