A fixed number of components and/or items, not all having the same basic name, which utilizes sound waves for underwater communications.
Classification: Parts & accessories for direction finding compasses and other navigational instruments and appliances
NSN 6150-00-278-1294
NSN 6320-01-585-8468
NSN 6150-01-021-2678
NSN 5910-01-066-8886
NSN 5975-00-660-5962
NSN 5975-01-621-3014
NSN 6620-00-650-4452
NSN 6320-00-937-5625
NSN 6650-01-327-4122
NSN 5998-00-978-9755
NSN 5998-00-041-1807
NSN 6105-00-432-0771