UNITED STATES COAST GUARD 



TREASURY DEPARTMENT 



ELECTRONIC 

 NAVIGATIONAL AIDS 



Loran, Radiobeacon, and Radarbeacon 



Systems 



and 



Loran, Radio-Direction-Finder, and 

 Radar Ship Equipment 



m 



O r^ 



= 7 CD 



— m 



Revised Edition (1949) 

 CG 157 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1949 



