The 1971 Ice Season officially commenced at 0000 GMT, 10 March, 

 when the first Ice Bulletin was issued, and continued until the 

 final Bulletin was issued at 1200 GMT, 29 June 1971. Twice-daily 

 Ice Bulletins were broadcast by the International Ice Patrol Radio 

 Station Boston/NIK, U. S. Naval Radio Station Washington/NSS, 

 Canadian Forces Radio Station Mill Cove/CFH, and Canadian Coastal 

 Radio Station St. John's/VON. The Ice Bulletin was also included 

 in the U. S. Marine Information Broadcast for the High Seas of the 

 North Atlantic, a voice broadcast originating from the U. S. Coast 

 Guard Radio Station Boston/NMF. A facsimile ice chart was also 

 broadcast from Radio Boston once daily. 



The U. S. Coast Guard Cutter EVERGREEN, commanded by Lieutenant 

 Commander Robert E. PHELPS, U. S. Coast Guard, conducted oceanographic 

 cruises for the Ice Patrol during April and May. The U. S. Coast 

 Guard Cutter ROCKAWAY, commanded by Commander William T. ADAMS, 

 U. S. Coast Guard, joined EVERGREEN during the May survey to conduct 

 a multi-ship survey of the Labrador Current and the surrounding 

 oceanic area. For the twelfth consecutive year, it was unnecessary 

 to use a surface patrol cutter. 



During the 1971 Season an estimated 62 icebergs drifted south 

 of 48°N, a relatively light season. It is also estimated that another 

 11 icebergs drifted south of 48°N during July 1971 only to deteriorate 

 before reaching 47°N. 



