59° 58° sr 56' 



59° 58° 57° 56° 55° 54° 53° 52° 51° 50° 49° 48' 47° 46° 45° 44° 43° 



Figure 1. Chart showing general Ice Patrol Area, principal region of aetivity (within solid black linel. critical area (ahaileil). and the stearaei- tracks as prescribed by North Atlantic Track Agreement» »* 



81771—37 (Pace p. 1) 



