In general, Forestport, Summit, and Criggion were 

 easily received throughout the entire North Atlantic while 

 infrequent attempts to measure Haiku were routinely success- 

 Good signols ful in the Western Atlantic. In the Eastern Atlantic, Haiku 

 was marginal in the Canary Islands (about 7000 n.mi. ) and 

 usually could not be used when the propagation path passed 

 over Greenland (although measurements were made in the 

 Netherlands). 



It is the consensus that a system such as Omega is 

 particularly useful for oceanographic survey work in mid- 

 ocean. The system was also of value in standard navigation 

 problems such as making a land-fall after prolonged opera- 

 tion without star sites. 



In addition to sk5rwave correction problems, one of 

 the most significant accuracy limitations in the Atlantic 

 area is the purely geometric one resulting from the loca- 

 tions of the existing developmental stations. Figures 1 and 

 Poor geometry 2 illustrate the expected Omega fix accuracy for various 



lines-of-position in the North Atlantic. These are based 

 on system geometry existing during the operation and a 

 theoretical model which assumes 4-centilane timing errors 

 believed indicative of daytime conditions." The accuracy 

 at night and during transitions would be less than that indi- 

 cated by the figures. 



