Results of technical trials with underwater detection gear, installed in Westland S.55 helicopter; intended for Naval use for antisubmarine and mine work, and also for fishing purposes; equipment employed was standard electronic echo sounder manufactured by Pye Marine Ltd, Lowestoft, England.
Underwater detection by helicopter
Am Helicoper
American Helicoper ; 46 , n 6
1957
Aufsatz (Zeitschrift)
Englisch
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