80. 



arrived on April 11 having been delayed by several hours of force 8 

 wind. 



Departure was taken from St. John's on April 22 to make a second 

 current survey. The bergs and growlers which had been reported 

 between April 15 and April 20 north of latitude 44° N., and east of 

 longitude 46° W., indicated the desirability of extending this second 

 survey northward to the latitude of Flemish Cap. The presence of 

 field ice between the Grand Banks and Flemish Cap and between 

 latitudes 46° and 47° N., however, made this out of the question 

 with a ship as ice-vulnerable as the General Greene. Furthermore 

 the time which would have been required would have meant that 

 these northern sections could have been made only at the expense 

 of eliminating the sections near the Tail of the Banks and in view of 

 the results of the first survey it was considered that the vicinity of 

 the Tail of the Banks would be an area of considerable importance 

 in regard to menacing ice during the month to follow. It was there- 

 fore decided to survey the same general area covered by the first map. 

 Another consideration entering into this decision was that the sig- 

 nificance of the northeastern berg reports was mitigated by the 

 probability that these bergs had been caught in field ice which had 

 been blown southeastward and ultimately had been freed in water 

 returning northeastward . 



It was further decided to begin the survey at the northern end and 

 work southward. This was a fortunate decision as the -northern part 

 of the area mapped was later invaded by field ice which would have 

 made the occupation of the northern section impossible had the 

 direction of progress of the survey been reversed. The work of collec- 

 tion was begun at station 2902 located at 46°23' N., 48°48' W., 

 on April 23. Aside from a short detour around field ice on the 

 northern section the work progressed without notable interruption 

 and station work was completed at station 2953 at 42°0r N., 51°20' 

 W., on May 2, a total of 52 stations having been occupied. The 

 resulting current map was then constructed and delivered aboard 

 the Champlain 12 hours after the last station had been completed. 

 The General Greene then returned to St. John's, arriving thereonMay 4. 



On May 20 the General Greene departed from St. John's to make 

 a third current survey. It had been planned that during this survey 

 a smaller area than usual would be mapped once and then resurveyed 

 as soon as possible in an effort to learn something of the manner in 

 which the current pattern changes from one survey to the next. 

 The region best suited for such a double survey would be the region 

 with which we are already the most familiar, which in this case is 

 the area immediately eastward of the Grand Banks. However, 

 because of the menace of the southernmost ice to the United States- 

 European steamer lanes, this more ideally located area was discarded 



