87 



GENERAL PROGRAM OF WORK 



The oceanographic plan is based on five lines of stations which run 

 more or less at right angles to the currents and to the general trend 

 of the Grand Bank slopes along the following radials: 



Line A: Length 60 miles, 3 stations. 



Line B : Length 88 miles, 5 stations. 



Line C: Length 100 miles, 5 stations. 



Line D: Length 180 miles, 7 stations. 



Line E: Length 60 miles, 4 stations. 



50 49 4-5 47 4fa 45" 44 43 



Fig. 26. — The selected position of stations upon which are based the oceanographic surveys conducted by 



the ice patrol 



This distribution of stations permits a vertical examination of the 

 water mass to be extended offshore from five different points along 

 the slope of the Grand Bank, and it also allows us to determine the 

 important physical variations taking place in the ice-infested waters. 

 The distance between stations is set at 20 to 30 miles in order 

 that all the principal features will be detected, and the stations are 

 extended offshore from the Newfoundland shelf for a distance of 60 

 to 180 miles. The innermost stations are placed as far in on the 

 continental slope as possible, and yet readings secured from the stand- 

 ard maximum depth of observation, 750 meters, without the weights 

 touching bottom. It is important to take temperature and salinitj 



