Inavy name is echo depth sounder
All the components and items required to operate an electromechanical echo ranging system specifically designed to provide the dual functions of propagating underwater sound energy and of intercepting and presenting intelligence from the reflected portion of the transmission. Secondary functionsmay include underwater communication, listening, monitoring own ship's noise, mine and torpedo detection, depth sounding and the like. For items specifically designed for depth determination, see sounding set, sonar. See also sound ranging set; communication set, sonar and receiver-transmitter, sonar.
Classification: Parts & accessories for direction finding compasses and other navigational instruments and appliances
NSN 6240-00-138-3082
NSN 4140-01-519-3222
NSN 5855-00-491-7079
NSN 5975-00-837-3293
NSN 5925-01-487-6830
NSN 5920-00-449-0063
NSN 5935-01-142-7709
NSN 5945-01-361-9775
NSN 5925-01-446-4027
NSN 5945-01-249-8359
NSN 5835-01-277-7167
NSN 6150-00-227-2424