PREFACE 



This report, is the 61st in a series of annual reports on the International 

 Ice Patrol Service in the North Atlantic Ocean. It contains information on 

 Ice Patrol organization, communications and operations, ice and environ- 

 mental conditions and their relationship in 1975, and research conducted 

 this year. 



The authors of this report, Commander Albert D. SUPER, Lieutenant 

 Harold G. KETCHEN and Marine Science Technician First Class Charles 

 W. JENNINGS, all USCG, acknowledge ice and weather data provided by 

 the Canadian Department of the Environment, sea surface temperature data 

 provided by Commander, Maritime Command, Halifax, weather data pro- 

 vided by the U.S. National Weather Service, weather and oceanographic data 

 provided by the U.S. Coast Guard Oceanographic Unit. Acknowledgement 

 is also made to Yeoman Second Class Terry L. GEST, USCG, Chief Marine 

 Science Technicians Walter P. ARK and Neil O. TIBAYAN, USCG, Marine 

 Science Technician First Class Raymond J. EYERS, USCG, Marine Science 

 Technician First Class Robert N. HILDEBRAND, USCG, and Marine 

 Science Technician Third Class Paul A. LeBRUN, USCG, for their assistance 

 in the preparation of the manuscript and illustrations for this report. 



The continued assistance and cooperation provided by the Canadian 

 Coastal Radio Station St. John's/YON in the relay of operational and ad- 

 ministrative messages is gratefully acknowledged. 



