as U.S. Coast Guard Oceanographic Data Report CG-373-5. Ice 

 Island WH-5 had been blocking Kennedy Channel since the previous 

 winter, and as a result the surveyed areas were completely ice free 

 except for a few bergs along both shores. There are no records of a 

 similar situation having occurred prior to this summer, although the 

 area had been occasionally navigable with difficulty by ice breakers 

 under optimum conditions. 



The Evergreen departed Boston for Argentia on 8 July, arriving on 

 11 July and, after a conference with the U.S. Naval Oceanographic 

 Office's Ice Forecasting Section, departed Argentia on 12 July for the 

 Bonavista triangle. The Evergreen arrived at the first station, No. 

 8698, on 13 July and completed the triangle on 16 July with station 

 8727. On 17 July, data collecting on the Labrador Sea section was 

 begun at station 8728. In addition to collecting temperature and 

 salinity data, a total of 291 oxj'gen determinations were made for all 

 depths excluding the surface using a modification of the Winkler 

 method, and 314 samples were collected and frozen in 8-ounce poly- 

 ethylene bottles for the later determination of inorganic phosphate, 

 total phosphorus, nitrite, nitrate, and silicate content by the Woods 

 Hole Oceanographic Institution. The Labrador Sea section was 

 completed on 21 July with station 8749, two stations and 20 miles 

 short of the desired goal because of heavy storms that extended 35 

 miles off the South Greenland coast. 



The oceanographic work was under the supervision of oceanographer 

 Alfred P. Franceschetti who was assisted by LCDR V. W. Driggers 

 and LT R. M. O'Hagan. Other assistants in the observational work 

 and reduction of data included R. C. Norris, aerographer's mate 

 chief; P. R. Flowers and W. D. Eddowes, aerographer's mates, fo'st 

 class; R. A. Lindsay and J. A. Senefelder, aerographer's mates, second 

 class; H. J. W. Daugherty and J. R. Blackwell, aerographer's mates, 

 third class. 



Temperature and salinity observations were made at each of the 

 363 stations. At the 22 stations included in the Labrador Sea section, 

 the observations extended from the surface to as near the bottom as 

 was practicable, utilizing NODC standard depths of observation as 

 a guide. At the remaining stations, the observations were limited to 

 the upper 1500 meters with the intended depths of observations in 

 meters, at 0, 25, 50, 75, 100, 150, 200, 300, 400, 600, 800, 1,000, and 

 1,500. 



Temperatures were measured with protected deep-sea reversing 

 thermometers, mostly of Richter & Wiese manufacture, but with some 

 manufactured by Negretti & Zambra, G. M. Manufacturing Co., and 

 Kahl Scientific Instrument Corp. Depths of observation are based 

 on unprotected reversing thermometers made b}' Richter & Wiese and 

 by Kahl Scientific Instrument Corp. As in previous 3 ears, a program 



44 



