PREFACE 



This Bulletin is No. 53 in a series of annual reports on the Interna- 

 tional Ice Observation and Ice Patrol Services and for the first time is re- 

 ported on a season to season basis rather than on a calendar basis. The au- 

 thority for the mission, forces assigned, and method of operation of the 

 International Ice Patrol during the 1967 season are described. 



Aerial ice observations and communication statistics are provided. 



All ships reporting- ice and weather to the International Ice Patrol in 

 1967 are tabulated. Figures illustrating the ice conditions for the Grand 

 Banks are included. Four hundred and forty one bergs drifted south of 

 Latitude 48°N. during the season. The most southerly berg of the season 

 was reported on 23 May 1967 in position 43° 15' N., 49°32' W. The duration 

 and extension of the pack ice to the south and east of Newfoundland was 

 below normal except along the east coast of the Avalon Peninsula where 

 St. John's harbor was on occasion completely blocked by pack ice. 



Pre-season activities, including the 1966 northern ice surveys are il- 

 lustrated. 



Rear Admiral J. A. ALGER, JR., U.S.C.G. was Commander, Interna- 

 tional Ice Patrol. Commander J. E. MURRAY, U.S.C.G. was directly re- 

 sponsible for the management of the Patrol. 



The author of this bulletin. Commander J. E. MURRAY, U.S.C.G. ac- 

 knowledges the assistance provided in the preparation of the illustrations 

 and manuscript by Chief Aerograi)her's Mate W. F. VAN GAASBECK, 

 U.S.C.G. and Yeoman First Class H. M. KERN, U.S.C.G. 



