i here were an estimated additional 50 bergs in the survey area not 

 sighted, due to poor or incomplete coverage in a few areas, mainly east 

 of Resolution Island. The first noticeable concentration of about 

 26 bergs was located between 57° N. and 58° N., most of them being 

 small, fairly close ashore, and probably aground. Between 58° N. 

 and Cape Chidley there were about 80 bergs mostly within 20 miles 

 off the coast and many probably temporarily aground. At least half 

 of these were medium or large bergs. There was no sea ic« south of 

 59°20' N. except for some slush ice in protected waters. North of 

 Hudson Strait entrance the sea ice limits were approximately 100 

 miles offshore, generally paralleling the Baffin Island coast. See 

 figure 62 for the flight tracks and ice pot. Berg sizes were estimated 

 as follows: 



The impression was strong that bergs were generally larger than 

 those observed during the preseason 1963 northern surveys. 



The second 1964 preseason northern ice survey was conducted during 

 26-28 February from Newfoundland to just north of Cape Chidley, 

 Labrador. The first flight of 8.6 hours on 26 February from Argentia 

 to Argentia covered the area north and west of a regular preseason 

 flight made on 23 February. The second flight of 9.8 hours from Ar- 

 gentia to Argentia, including a fuel stop at Goose Bay, covered the 

 area north of the 26 February flight to just north of Cape Chidley 

 from the Labrador coast to 80-90 miles offshore. Visual effectiveness 

 for both flights was 95 percent. See figure 63. A total of 901 bergs 

 were counted during the 2 flights. There were three other known 

 bergs sighted south of the survey area on 23 February. Additionally 

 there were an estimated 40 bergs not sighted in the survey area due to 

 incomplete coverage, for an estimated total of 945 bergs including 900 

 south of Cape Chidley as of 28 February 1964. Bergs were distributed 

 as follows : 



70 



