30 



morning of June 23, 1939, in latitude 41°45' N., longitude 48°40' W. 

 The commander, International Ice Patrol directed the General Greene 

 to proceed to the position in wliich this berg was reported and to search 

 from that point to the southeast. The berg was found by the General 

 Greene in latitude 41°35' N., longitude 48°09' W. on the afternoon of 

 the 24th and she remained with the berg until the Chamidain arrived 

 at 2022 that evening. The former vessel was then released to resume 

 oceanograpliic duty. The patrol ship drifted with tliis berg until July 

 5 when it was no longer a menace to navigation. The drift of the 

 berg from June 24 to July 5 is shown on the track chart for tliis cruise. 

 (See fig. 16.) 



On the evening of July 5 course was set to northward in order to 

 be in position to commence a search for ice in the Labrador Current 

 south from latitude 46°00' N. Dense fog was experienced on July 6 

 and 7 so that no scouting could be accomplished. On July 8, with 

 moderate to good visibility, search courses were run in the axis of the 

 cold current from latitude 45°30' N. to latitude 44°13' N. A large 

 berg was sighted in latitude 45°24' N., longitude 48°32' W. and 

 another berg in latitude 45°10' N., longitude 48°26' W. Efforts were 

 made to relocate these bergs before the close of the day, but they were 

 not found. Fog set in during the night and the Champlain drifted in 

 vicinity of latitude 45°00' N., longitude 48°35' W. to await better 

 visibility. 



On July 10, with a brief improvement in visibility, the Labrador 

 Current was searched from latitude 45°04' N. to latitude 44° 15' N. 

 The berg sighted on the 8th in latitude 45°24' N., longitude 48°32' W. 

 was relocated in latitude 44°34' N., longitude 48°32' W., no other ice 

 being sighted. That evening the Champlain drifted with this south- 

 ernmost known berg and the following day the cold current was 

 searched northward to latitude 45°50' N. One berg was sighted in 

 latitude 44°45' N., longitude 49°07' W. That afternoon dense fog 

 set in and the patrol vessel returned to the vicinity of the southern 

 berg. The weather map for the evening of July 12 indicated a period 

 of continued dense fog, so the Champlain set course for the reheving 

 point. 



Since only one berg was known to be south of latitude 47° N. just 

 prior to July 1, the scheduled return of traffic to tracks C was approved. 

 On July 9, however, with the sighting of two bergs just north of the 

 45th parallel on the 8th, and conditions between latitudes 45°30' N. 

 and 47°00' N. being largely unknown, it was recommended to Com- 

 mander, International Ice Patrol, that traffic be immediately shifted 

 to tracks B. The recommendation was approved by the North 

 Atlantic Track Agreement effective July 1 1 . 



While the Champlain was drifting with the berg from June 24 to 

 July 5 vessels were advised in the regular broadcasts that the patrol 



