53° 



52° 



51' 



50° 



49° 



4 8° 47° 46° 45° 



48° 



47' 



46° 





T. 



1 — r 



44° 

 48° 



'?^ — *- 





-X k\x X K K X *—* «/-» ^1 



< N« * 



45° 



44° 



\ 

 _ \ 



43° 



42° 



47° 



46' 



45° 



44° 



- 43' 



•— TRACKLINE-1965 



* TRADITIONAL TRACKLINE 



42° 



- 41' 



53° 52° 



50° 49° 



48' 



47° 46° 45° 44° 



Figure lA. Trackline and station array of past Ice Patrol seasons comparea with the 1965 Ice Patrol season. Section 



letter designations are shown. 



13 



