DECCA FIXING ACCURACY 
re e A € €. £ 
   
    
   
    
   
   
  
  
  
  
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Figure 1. PRESENT COVERAGE OF THE PERMANENT DECCA NAVIGATOR CHAINS 
IN EUROPE. The Swedish Chain, now in course of construction, is included in this diagram. 
  
  
  
        
    
  
  
  
j 
aiii ots Cul ON 
itn ra 7.