International 



Ice Patrol 



1985 Annual Report 



Contents 



2 



3 



5 



6 



41 



43 



43 



45 

 53 

 56 



68 



79 

 85 



Introduction 



Summary of Operations, 1985 



Iceberg Reconnaissance and Communications 



Environmental Conditions, 1985 Season 



Ice Conditions, 1985 Season 



Discussion of Icebergs and Environmental Conditions 



References 



44 Acknowledgements 



Appendices 



A. List of Participating Vessels, 1 985 



B. Iceberg / Ship Target Discrimination with SLAR 



C. Oceanographic Conditions on the 

 Grand Banks, 1 985 



D. Evaluation of the International Ice Patrol Iceberg 

 Drift Model 



E. Eddy Formation in the Vicinity of the Grand Banks 



F. SLAR Detection of Ocean Features 



