Fog Signal Distance Finding for Overfalls Lightship (1953)

For 2 minutes For 1 minute
  RBN Off 52
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1
 
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 5
 
  FS
14 1
 
 3 1
 
 14 1
 
 3 1
 
 14 1
 
 3 1
 
14 1
 
 3 1
 
 33
 
 
 1
 
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 5
 
Figures show seconds.
 
  Shows of dash of RBN or
 blast of fog signal.
RBN Code: