SYSTEM FREQUENCY TYPE MAXIMUM PRESENT PLOTTING ACCURACY EQUIPMENT NEEDED ON 

 and associated BAND RANGE STATUS METHOD (Average) SHIP 



names (Miles) 



RAYDIST (E, 2 Mcs Surveying 

 R,N, and ER) 



150 miles Obsolete Hyperbolic 200 ft. 

 except for 

 special 

 purposes . 



Special Receiver and 

 Phase meters. 



Special Receiver and 

 Phase meters . 



Special Transmitter 

 and Receiver. 



Special Receivers 

 and Phase meters. 



Special bomb. 



Sound wave receiver. 



(Instrument Division- -U.S. Coast & Geodetic Survey — October 1963) 



162 



