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who invented echo sounding devices for mapping the ocean floor

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By: Guest
Date: Thu-Feb-18-2016-
Response
0
Englander Lewis Richardson invented Sonar and patented it in 1912 shortly after Titanic sunk. But this was crude ultrsound use.

German engineer Julius Hageman, brought over after WWII developed one of the first side scan bottom topography sonar systems after coming to Panama City, Florida working under classified Military Naval contracts, so his patents weren't released until 1958, along with concurrent development by Harold Edgerton at MIT in the 50's on modified systems. Commercially, systems were not developed 'till the 1960 with the Kelvin-Hughes design and the first use to find sunken ships commercially known to the public was 1963, but the military used it in the late 50's as classified operations for little things like finding lost H-Bombs and the Rear Admirals car keys.
[d] By: Guest
Date: Thu-Feb-18-2016
Response
What is 1 + 100



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