Strait of Canso remained much the same during the month. Drift 

 ice on the east coast of Cape Breton came as far south as Scatari 

 Island. 



Eleven aerial surveys were made by Ice Patrol aircraft during 

 March. No known icebergs drifted south of 48°00' N. during the 

 month. Limits of pack and berg ice were much less than the average 

 limits shown in the Ice Atlas of the Northern Hemisphere. Distribu- 

 tion of ice is shown in figure 1. 



APRIL 



Five surveys by Ice Patrol aircraft between the 1st and 15th of 

 April established the fact that the pack ice found in the large embay- 

 ment between Cape Freels and Cape Bauld, Newfoundland, was 

 definitely moving eastward into deeper water as it loosened and broke 

 up with the warmer weather. By the 10th of the month the outer 

 limit of the pack extended approximately northeast from Cape 

 Freels, Newfoundland, to 50°00' N., 52^40' W., and thence west- 

 northwest. 



From the 13th until the end of the month, westerly winds prevailed 

 over the entire Newfoundland area and accelerated the movement of ice 

 offshore. Aerial surveys on the 14th, 15th, 17th, 19th, and 22d, 

 showed that the pack was rapidly moving eastward under the influence 

 of these westerly winds, and that there were many small bergs and 

 growlers in this ice, probably those which had been noted during March 

 in the Notre Dame Bay area. By April 22, the outer limit of pack and 

 drift ice extended approximately from Baccalieu Island to 49°10' N., 

 50°20' W., thence northwest. 



During the remainder of April four more aerial surveys were made, 

 on the 25th, 26th, 28th, and 29th. By the end of the month the 

 southern and eastern limits of all ice extended approximately from 

 Cape St. Francis, Newfoundland, to 47°40' N., 47°00' W., to 50°30' 

 N., 52°00' W., to 52°00' N., 52°00' W., thence northwest. Many 

 bergs and growlers lay within the area enclosed by this boundary line. 

 Near the vicinity of 48°00' N., 48°00' W., 3 bergs and about 15 growl- 

 ers were sighted, all in a position to move rapidly southward with the 

 Labrador Current which was known to be running strongly near this 

 locality from an oceanographic survey performed during the first 3 

 weeks of the month. The most southerly ice formation sighted during 

 the month, and the most dangerous to shipping, was a small berg 

 sighted on the 29th at 47°45' N., 47°59' W. About 8 bergs and 20 

 growlers were sighted near a line from 47°50' N., 50°30' W., to Cape 

 St. Francis, but were not considered in a favorable position to move far 

 south, as it was known from the oceanographic survey that the 

 Labrador Current was very weak and variable along the coast of the 

 Aval on Peninsula. 



8 



