pattern, winds over the southeast limits of ice were variable and 

 strong. North of the Grand Banks and along the Labrador coast the 

 surface winds were consistently east-northeasterly. Although the 

 four bergs sighted south of 48° N. on the 3d all deteriorated before 

 they reached 46° N., one large berg and a handful of medium-sized 

 bergs were to be watched. Two very successful flights made on the 

 17th covered all areas of suspected ice on the Grand Banks and also 

 the area north of the Grand Banks to 50°30' N. These flights 

 enabled a determination of ice conditions on the Grand Banks and the 

 potential for the next month. See figure 9. There were no bergs 

 south of 48° N. at this time, but a growler was sighted at 47°05' N., 

 47040' W. There w^ere only 10 offshore bergs and an estimated 20 

 bergs aground or trapped in bays south of Belle Isle. The large berg 

 was located at 48°05' N., 47°10' W. ; three bergs were near 48°20' N., 

 50°10' W.; and four bergs near 49° N., 51° W. These eight bergs 

 were the only ones remaining that were in a good position to drift 

 toward the major transatlantic shipping lanes at the Tail of the Banks. 

 The April surface sea water temperatures on the Grand Banks as 

 shown by figures 2 and 3 were colder than normal, and the large 

 pinnacled berg, measured by the U.S. Coast Guard cutter Ingham on 

 the 17th as 450 feet long and 190 feet high, was expected to last at 

 least a month if it remained in the cold waters of the Grand Banks or 

 Labrador Current. This berg was given a good chance to reach Track 

 C, but the other six medium-sized and one small berg were not expected 



Figure 8. — Ice conditions on 3 April 1963. 



11 



