October 1979	VOLUME 4	NUMBER 4	IJOEDY	(ISSN 0364-9059)

NONTECHNICAL CONTENT
		Front cover and table of contents
		Back cover
PAPERS
John S. Prentice and H. Lee Craig  Jr.		Rotating disk electrode oxygen sensor and corrosion rate probe		137
John E. Ehrenberg		A comparative analysis of in situ methods for directly measuring the acoustic target strength of individual fish		141
Robert J. Hansen and Chen-Chou Ni		Flow-induced transverse motions of a flexible cable aligned with the flow direction		152
COMMUNICATIONS
Ira M. Weiss		Comments on "Optimal estimation of ship's attitudes and attitude rates " and "Ship motion measurement filter design "		157