21 



Number of bergs reported south of latitude 48° north 56 



Number of bergs reported south of latitude 43° north 



Number of ice reports received 151 



Number of vessels furnishing ice reports 54 



Number of water temperature reports received 1161 



Number of vessels furnishing water temperature reports 148 



Number of vessels furnished special information 9 



FOURTH CRUISE, "CHAMPLAIN," APRIL 25 TO MAY 9, 1939 



The Cham plain sailed from Halifax, Nova Scotia, at 1111 on April 

 23, 1939, to relieve the Chelan on Ice Patrol duty. Light to moderate 

 westerly breezes with excellent visibility were experienced en route to 

 the relieving point. The Chelan was met in latitude 44°49' N., longi- 

 tude 51°55' W. The ice observation party reported aboard and at 

 0630 on 25 April, 1939, the Champlam relieved the Chelan as Ice Patrol 

 vessel. Course was set for the Tail of the Grand Banks and during 

 the last 2 hours of daylight on the 25th the Labrador Current was 

 searched from latitude 43°10' N. to latitude 43°50' N. No ice was 

 sighted . 



On April 26, during periods of good visibility, search courses were 

 run along the eastern edge of the Grand Banks from latitude 43°03' 

 N. to latitude 44°40' N. Two bergs were sighted, one in latitude 

 44°13' N., longitude 48°52' W. and one in latitude 44°29' N., longi- 

 tude 48°57' W., the patrol vessel drifting with the southernmost of 

 these bergs that night. The following morning the search for ice in 

 the Labrador Current was continued to latitude 44°54' N., several 

 bergs and growlers being sighted along the track. That afternoon 

 course was directed east to longitude 48°25' W., sighting field ice 

 north of the track, and then south to latitude 43°27' N. in order to 

 ascertain conditions inasmuch as bergs had drifted into this area dur- 

 ing previous patrols. No ice was sighted to the eastward and that 

 night the Champlain relocated the southernmost known berg in lati- 

 tude 43°28' N., longitude 48°56' W. The next day the Labrador Cur- 

 rent was searched from latitude 43°00' N., to latitude 44°05' N. and 

 bergs sighted the previous day were relocated, showing their drift 

 southward to be in exact accordance with the current chart. That 

 night the southernmost berg was relocated in latitude 43°09' N., longi- 

 tude 49°28' W. As fog was expected, the patrol vessel remained 

 with this berg throughout the night and during the next morning 

 except for a few hours spent in relocating another berg in the vicinity. 



At 1242 on April 29, a request for medical assistance was received 

 by radio from the S. S. John W. Mackay. Advice was given by radio 

 and the Champlain set course to intercept that vessel which was con- 

 tacted in latitude 42°51' N., longitude 50°02' W. at 1550. The med- 

 ical officer boarded the John W. Mackay, rendered assistance to the 

 sick man, and advised the master to send the patient to port for hos- 



