48° N., occurred during the month of June. Their distribution followed 

 the same general pattern throughout the month. None managed to 

 move south of the 44th parallel along the eastern slope of the Grand 

 Banks. Several drifted to the southeast into the area south of Flemish 

 Cap where they represented a definite menace to vessels traveling the 

 steamer lanes southeast of the Grand Banks. These bergs penetrated 

 further to the southeast during this month than during any preceding or 

 subsequent month. One was reported on track B, then in effect, on the 

 6th of the month at 4ri9' N., 45°16' W. It was reported as a small 

 berg and as the ice patrol vessel was unable to locate it, it is believed 

 that if it existed it did not long survive the relatively high water tempera- 

 tures in its vicinity. During the month three bergs drifted into position 

 to menace vessels travehng on westbound track B. Each of the three 

 drifts occurred at separated intervals throughout the month, however, 

 enabling the ice patrol vessel to drift with the berg until its ultimate 

 destruction. For this reason it was not necessary to resort to extra 

 southern track A. With the exception of a growler sighted at 44°28' N., 

 47°58' W., on the 28th, the area south of 47° N., and east of 52° W., was 

 clear of all ice by the end of the month. As a conservative estimate based 

 on the above mentioned growler's size and the existing water tempera- 

 tures in its vicinity, it was believed that this growler would be com- 

 pletely destroyed by the end of the month. The shift from United 

 States-European track B to track C, scheduled for 1 July was made 

 on time. 



Throughout the month, bergs were reported or sighted along the Avalon 

 Peninsula from Baccalieu Island to Cape Race. As the month ended a 

 berg and growler were located approximately 20 miles east of Cape Race, 

 several offshore in the vicinity of Cape Spear, and 1 just south of Bacca- 

 lieu Island. 



Further to the north, on the 7th of Jvme the Belle Isle Radio reported 

 the first successful vessel navigation of the Strait for 1948. The end of 

 the month found several bergs to seaward of the entrance and scattered 

 bergs along the Labrador coast bordering the Strait to the north. Be- 

 tween the Strait of Belle Isle and Hamilton Inlet there were numerous 

 bergs and growlers along the Labrador coast and offshore to a distance of 

 120 miles between the 53d and 54th parallels. It is estimated that 68 

 bergs entered the area south of 48° N. during the month of June. Their 

 distribution is shown graphically in figure 6. 



JULY 



As the month began, the area south of 47° N., and east of 52° W., was 

 clear of all ice. The southernmost berg was located at 47°38' N., 47°47' 

 W. Its drift was eastward and there remained little probability that it 

 would become a menace to vessels traveling on scheduled United States- 

 European track C. The continuous surface vessel patrol was therefore 

 discontinued on 2 July. On 7 .July the ice season in the Grand Banks 



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