the Northern Hemisphere. These existing aids should be used to 

 their fullest extent in the immediate future. Additional implementa- 

 tion of these aids, although costly and time consuming, would in- 

 crease the area available for survey. The radio sextant, coupled 

 with a dead reckoning device, may be feasible for operation in the 

 Southern Hemisphere. Either Omega or Transit may be found 

 technically feasible and operationally useable. Research and 

 development of these systems continues and may well result in 

 the ultimate answer to precise navigational data necessary for the 

 successful conduct of the National Oceanographic Program. 



105 



