30 miles apart and the observations extended to a depth of about 

 3,000 meters instead of the usual 1,500 meters and were supple- 

 mented by bathythermograph casts every half hour on the runs 

 between stations. The addition of this section was a contribution 

 to United States participation in the International Geophysical 

 Year. The section was occupied between the morning of 23 May 

 and the night of 25 May. The ensuing network survey was com- 

 pleted on the morning of 5 June. There were no interruptions or 

 unusual delays during this period. On this survey 95 stations were 

 occupied, the first 15 of these being along section W. 



A postseason cruise had been planned to include an occupation 

 of the Bonavista triangle and the section across the Labrador Sea 

 from South Wolf Island, Labrador, to Cape Farewell, Greenland. 

 Normally, ice conditions would have made it inadvisable to ap- 

 proach Cape Farewell before mid-July. This year, however, all 

 available information indicated that ice deterioration was about 

 two weeks ahead of a normal season. Accordingly, the Evergreen 

 departed Boston for the postseason cruise on the unusually early 

 date of 23 June. The Bonavista triangle, including 30 stations, 

 was occupied between the morning of 27 June and the early morn- 

 ing of 30 June. The Labrador Sea section, including 24 stations, 

 was occupied between the morning of 1 July and the morning of 

 6 July. There were delays occasioned by heavy weather as follows : 

 16 hours on 4 July prior to station 6882, 51/2 hours on 5 July 

 following station 6883, and 5 hours on 5 July prior to station 

 6885. Of the last 5-hour delay only about 2 hours was on account 

 of weather, the remaining 3 hours being to coordinate the approach 

 to Cape Farewell with the best chance of good visibility. The 

 final station was occupied just outside a coastal belt of sea ice 7!/2 

 miles off Cape Farewell. 



The oceanographic work was under the supervision of Oceanog- 

 rapher Floyd M. Soule who was assisted by Lt. R. M. Morse. 

 Other assistants in the observational work were El wood C. Gray, 

 aerographer's mate first class ; William G. Carpenter, yeoman third 

 class; R. J. Messier, seaman (during the first survey); D. C. 

 Bailey, aerographer's mate first class (during the first and sec- 

 ond surveys) ; Herbert A. Ashmore, aerographer's mate third class 

 (during the first and second surveys) ; Herbert J. Spiegel, 

 aerographer's mate third class (during the second and third sur- 

 veys and the postseason cruise) ; Richard C. Norris, aerographer's 

 mate first class (during the third survey and postseason cruise) ; 

 and O. W. Warf, Jr., radarman third class (during the third survey 

 and postseason cruise). Temperature and salinity observations 

 were made at each of the 317 stations. At the 24 stations forming 

 the section across the Labrador Sea the observations extended 



30 



