Records obtained from the Trials of a Long Range Side-scan Sonar (GLORIA Project)

Abstract

IN 1958 the National Institute of Oceanography developed a narrow beam sideways looking sonar for underwater geology and fish detection1 based on earlier work first reported on by Chesterman, Clynick and Stride2. During the past 10 years it has proved to be a valuable tool in studying the materials and relief of the sea floor at continental shelf depths. For some years it has been supplied to research laboratories and geophysical prospectors by instrument manufacturers in Britain and elsewhere.