Harvey Cornelius Hayes 

 (1878- 1968) 



Developed the sonic depth finder in 1921 at the Naval 

 Experimental Station at Fort Trumbell, New London, 

 Connecticut. From 1923 - 1947 Hayes was Superintendent of 

 the Sound Division at the Naval Research Laboratory. The 

 Navy's first catamaran-hull oceanographic research ship, the 

 T-AGOR 16, is named in his honor. 



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