MARINE RADAR 

 INTRODUCTION 



The Coast Guard, by virtue of its close association with the maritime world 

 in performing the functions of saving life and property at sea, and maintain- 

 ing and operating aids to navigation, is especially interested in Radar for 

 use at sea. Long before the secrets of Radar were released to the American 

 public, its application as a safety feature on merchant ships had been realized 

 by the Coast Guard by reason of their use and reliance on this equipment. 

 This remarkable technological achievement, conceived long before the war 

 but brought to practical success only by the impact of war, has become one 

 of the most important single safety features put to use on merchant ships. 

 As time goes by, it can be reasonably expected that Radar scopes on the 

 bridges of ships will be as common sights as gyrocompasses. 



- rl 



Figure 4—1. — Typical Radar presentation superimposed on a naviguiiijuui chart showing 

 entrance to New York Harbor. 



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