32 



On the evening: of July 24, the patrol vessel having thoroughly 

 searched the southward moving waters of the Labrador Current south 

 of latitude 45°00' N., and no ice having been found therein that might 

 drift to the vicinity of tracks C, it was recommended to Coast Guard 

 Headquarters that United States-European traffic be sliifted imme- 

 diately from tracks B to tracks C. The Chelan proceeded to the west- 

 ward during the 26th and met the Champlain on the Banks. 



The following is a summary of the ice and water temperatirre 

 reports received during this cruise: 



Number of bergs reported south of latitude 48° north 13 



Number of bergs reported south of latitude 45° north 4 



Number of bergs reported south of latitude 43° north 



Number of ice reports received 20 



Number of vessels furnishing ice reports 16 



Number of water temperature reports received 785 



Number of vessels furnishing water temperature reports 137 



Number of vessels furnished special information 18 



TENTH CRUISE, "CHAMPLAIN," JULY 28 TO AUGUST 10, 1939 



The Champlain sailed from Halifax, Nova Scotia, at 1005 on July 

 25, 1939, to relieve the Chelan on Ice Patrol. Light to moderate 

 northerly breezes with good visibility prevailed during the run to the 

 relieving point and the Chelan was met in latitude 44°24' N., longi- 

 tude 52°52' W. The ice observation party reported on board and, at 

 2314 on July 26, 1939, the Champlain relieved the Chelan as Ice Patrol 

 vessel. 



Course was set to the eastward to relocate bergs sighted by the 

 Chelan on the morning of the 26tli in latitude 44°47' N., longitude 

 48° 10' W. The following day, July 27th, two bergs and a growler 

 were sighted in latitude 44°37' N., longitude 48° 16' W. Course was 

 then set to northward to search for ice in the Labrador Current north 

 of the 45th parallel. On Jidy 28th a large berg was observed in 

 latitude 45°58' N., longitude 47°45' W. where tliick fog was en- 

 countered and the patrol vessel returned to southward, relocating ice 

 sighted the previous day in latitude 44°24' N., longitude 48°25' W. 

 That afternoon two new bergs were sighted in latitude 44°07' N., 

 longitude 48°58' W. This being the southernmost known ice, the 

 patrol vessel remained in the vicinity to observe the drift. By 

 August 3 the smaller of the two bergs had completely disintegrated, 

 while the larger had drifted to latitude 43°37' N., longitude 49°24' 

 W. where it was apparently caught in an anticy clonic eddy and 

 remained to the close of the patrol. 



On August 4, with excellent visibility, the Champlain searched the 

 cold water northward to latitude 45°30' N. Four bergs were sighted 

 in latitude 44°15' N., longitude 48°34' W. while on the northward run. 

 That evening, when the patrol vessel returned to vicinity of tliis ice, 

 the four bergs had disintegrated to two small bergs and two growlers. 



