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Contents

1955: Vol. XXXII, No. 2

Directional Echo Sounding

  • H. F.P. Herdman
Submitted
July 27, 2018
Published
2018-04-30

Abstract

A short account of an experiment to improve the directional quality of deep water echo sounding equipment. A comparison is made between the results obtained with the pre-war sonic deep water echo sounding set then fitted, and the present-day supersonic type of equipment now installed in the R .R .S . Discovery // . Methods of stabilizing the transmitter and receiver to overcome the effect of rolling on the narrower and, hence, more directional beam of sound now transmitted, are discussed. A short description of the method adopted is followed by particulars on an attempt to increase the amount of energy transmitted, by a reduction in thickness of the hull plating, in way of the stabilized transmitter and receiver.