toward the reported position. Two radar targets found in the area 

 were identified as vessels. The Evergreen then returned to the posi- 

 tion of station 5064 and resumed oceanographic work on the late 

 evening of 29 April. No further interruptions occurred and the 

 survey, comprised of 81 stations was completed on the early morning 

 of 9 May. Course was then laid for the vicinity of station 5130 where 

 earlier measurements indicated the presence of surface water of 

 approximately the desired salinity for use as substandard water. The 

 location was reached on the late afternoon of 9 May and a carboy of 

 water was collected for use during subsequent surveys. The Ever- 

 green then proceeded toward Argentia and after searching the area in 

 the vicinity of Cape Race and westward for bergs Argentia was reached 

 on the evening of 11 May. 



A third survey was begun with the departure of the Evergreen from 

 Argentia on the afternoon of 26 May. Tliis survey consisted of the 

 occupation of the Bonavista triangle beginning and ending at the off- 

 shore corner. The work of collection of data began late on 27 May. 

 Work progressed counterclockwise around the triangle without 

 incident until the early morning of 29 May when the Wenner salinity 

 bridge developed a derangement in its measuring circuits. Tests 

 indicated the existence of a ground inside the tank containing the 

 constant temperature oil bath. On completion of station 5155 the 

 ship was hove to on the easiest possible heading while the bridge was 

 completely dismantled, the grounded circuit remedied, and the bridge 

 reassembled. Operations were then resumed after a delay of about 14 

 hours. No further interruptions occurred and the last of the 30 

 stations comprising the survey was completed on the early morning 

 of 31 May. The Evergreen then proceeded to Argentia arriving there 

 about noon on 1 June. 



At midday on 5 June the Evergreen departed Argentia to begin a 

 fourth survey. The area to be covered was similar in location to that 

 of the first survey but extending northward to the latitude of Flemish 

 Cap and omitting the area westward of the southern end of the Grand 

 Banks. Work began at the northern end of the area on the afternoon 

 of 6 June and was completed, after the occupation of 78 stations, on 

 the early morning of 17 June. As the International Ice Patrol had 

 been discontinued for the 1953 season during the progress of the 

 survey the Evergreen proceeded to Boston to await the beginning of 

 the postseason cruise. 



On the afternoon of 7 July the Evergreen departed Boston to begin 

 the postseason observations reaching the offshore corner of the 

 Bonavista triangle on 11 July. Proceeding counterclockwise around 

 the triangle the last of the 30 stations was completed on the afternoon 

 of 14 July. From this point the Evergreen proceeded to South Wolf 

 Island where, on the early morning of 16 July, a section across the 

 Labrador Sea to Cape Farewell, Greenland, was begun. Just seaward 



A6 



