9. Six individual bergs observed on the early December survey were 

 resighted and identified on the late February survey and on later Ice 

 Patrol Flights. See table VI. While the data collected on these bergs 

 are far from complete, by correlating with all known and assumed fac- 

 tors, the career of these individual bergs from the early December 

 survey to last sighting can be intelligently postulated. Individual 

 bergs will travel at different rates depending on many factors and it 

 is probably more significant and useful to establish travel rates of 

 groups. However, the data in table VI should be interesting to say 

 the least. Note that generally the average drift rates of these bergs are 

 slower than the rates estimated for the three groups. The basic reason 

 for this discrepancy is that the large bergs are bound to spend more 

 time aground than the shallower-drafted smaller ones. While positive 

 identification was not made other than by visual observation from 

 sighting to sighting, it is reasonably certain on the basis of shape, size, 

 and successive locations that there were no mistaken identities. Notice 

 the considerable differences in travel rates depending mainly on the 

 amount of time spent aground. Note that Berg Foxtrot passed Berg 

 Echo sometime between the 4 December and 28 February surveys, but 

 Berg Echo managed to overtake and pass Berg Foxtrot sometime in 

 March as the latter apparently had greater difficulty in escaping its 

 temporary entrapment. 



10. Assuming Charlie or its fragments were just north of the survey 

 coverage of 4-6 December, they had drifted 800 miles in 4 months, 

 an average daily rat« of 6.8 miles per day, with average winds slightly 

 unfavorable for drift toward the south. From 5 Dec«mber-26 Feib- 

 ruary the estimated advance was 850 miles for an average rate of 9.9 

 miles per day with winds averaging favorable for drift toward the 

 Grand Banks. Charlie fragments first appeared just north of the 

 Grand Banks just prior to mid- April having traveled 420 miles in 42 

 days or 10 miles per day. Tlie average rate of advance during this 

 entire period was 8.4 miles per day with winds evaluated slightly 

 favorable for drift toward the Grand Banks. Travel time for Charlie 

 fragments from Smith Sound to the Grand Banks was about 8 months. 

 Travel time from Cape Dyer was estimated to be slightly more than 

 4 months. By the end of April most of the Charlie fragments were 

 driven south to near 46° N., 51° W., by average northerly winds and 

 a few survived to 44° N. by early May. Once removed from the pack 

 ic«, these fragments deteriorated within 20 days. Tliere were an 

 estimated 50 fragments in the vicinity of the Grand Banks in late 

 April and most, if not all, were remains of the 16 ice island fragments 

 off Hamilton Inlet on 26 February. Charlie fragments traveled past 

 at least 250 bergs between 5 December and 28 February 1965. 



11. A couple of the eight closely concentrated WH-5 fragments 

 located 60 miles northeast of Cape Chidley on 28 February were next 



777-824 O — 65- 



73 



