FiOOTI 1. Chart showing the Ice l'^''°'^^«^''be larger rectangle enclosing the Grand Banks of Newfoundland; the principal region of patrol activity, the smaller area southeast of the Grand Banks within solid black line; the 

 147469-40 (Face p 1 Prescribed by the North Atlantic track agreement. Canadian routes D. E. F, and G, and Uoited States-European routes A, B, and C. 



critical " 



