FIGURE 3 



THE ESTIMATED LIMITS OF ALL KNOWN ICE IN THE REGION OF THE GRAND BANKS 

 FOR THE 1981 INTERNATIONAL ICE PATROL ACTIVE SEASON. THE ICE CONDITIONS 

 ARE FOR 1200 GREENWICH MEAN TIME FOR THE DATE INDICATED. THE POSITIONS 

 SHOWN ARE BASED ON OBSERVED AND FORECAST POSITIONS. 



KEY 



A : BERG SEA ICE CONDITIONS 



▲ : BERG (MORE THAN ONE) ,' ,' ,' : LESS THAN 7 TENTHS 



r\ : GROWLER = : 7 TENTHS OR MORE 



^ : GROWLER (MORE THAN ONE) 

 X : RADAR CONTACT 



31 



