20 



from the Bochum that she was steaming with the assistance of the 

 ice breaker Imogene and would not require additional help. The 

 Titanic memorial services were held on the morning of the 15th with 

 the customary honors. That afternoon the Chelan set course to 

 return to the eastern edge of the Grand Banks. 



During a period of excellent visibility on the 16th, 17th, 18th, and 

 19th the Ice Patrol vessel thoroughly searched the Labrador Current 

 from latitude 43°20' N. to latitude 45°55' N. and no ice was sighted. 

 The Chelan drifted throughout the night of the 19th and at daylight 

 the following morning a berg was sighted in latitude 45°30' N., 

 longitude 47°01' W. Search courses were run to the southeast that 

 day to relocate three bergs reported on the 18th. Two large growlers 

 were sighted in the following positions: One in latitude 45°22' N., 

 longitude 46°27' W.; and the other in latitude 45°05' N., longitude 

 46°04' W. An invasion of tropical Atlantic air covered the cold 

 water with fog on the 21st so the patrol vessel cruised southeastward 

 to locate three bergs that had been reported on the 18th, 19th, and 

 20th, the easternmost one in latitude 44°23' N., longitude 44°27' W. 

 A large growler was sighted near this position in water of temperature 

 56° F. at the surface and the growler was rapidly breaking up and 

 melting. That night course was set to the westward to be in position 

 to scout the Labrador Current when visibility would permit. Fog 

 continued to cover the cold water during the 22d, 23d, and 24th so 

 that no effective scouting could be accomplished during these days, 

 the Chelan maintaining position in the vicinity of latitude 45°00' N. 

 during tliis time. 



The weather map for the morning of April 24 indicated a continu- 

 ance of the fog over the cold water for at least another day, so the 

 Chelan set course westward toward the relieving point. 



With the approach of summer conditions over the Ice Patrol area 

 and the long periods of fog that can be expected under such conditions, 

 it is necessaiy for the patrol vessel to accomplish as much scouting 

 as possible during periods of good visibility. With this in mind and 

 taking into consideration the cruising limits of the vessel, the Chelan 

 has found that 140 revolutions per minute (15.3 Imots per hour) is 

 the speed best adapted for use in scouting for ice under favorable 

 weather conditions. 



Fishermen from the Brittany coast began to arrive in the area at 

 the end of this patrol and when spoken close aboard, the patrol ship 

 offered these vessels medical and other assistance. The schooner 

 Dazzle of St. John's, Newfoundland, 30 days out of Lisbon, Portugal, 

 with a cargo of salt for St. John's, was spoken on April 18 and reported 

 to the Newfoundland authorities as requested. 



The following is a summary of the ice and water temperature reports 

 received during this cruise: 



