Acoustic transducer elements from (a) Long range ride scan sonar array known as GLORIA (Geological Longrange Inclined Asdic) apparatus developed by Institute of Oceanographic Sciences, England, 1945-1980. Acoustic transducer elements from a long range ride sonar array (GLORIA) 1945-1980
Acoustic transducer elements from (b) short range ride scan sonar array also known as GLORIA (Geological Longrange Inclined Asdic) apparatus developed by Institute of Oceanographic Sciences, England, 1945-1980. Acoustic transducer elements from short range ride scan sonar (GLORIA) 1945-1980