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 6220-01-058-2297
NSN 5960-01-422-3269
NSN 6240-00-168-1474
NSN 5950-01-179-6015
NSN 7035-01-202-8172
NSN 5975-01-452-8587
NSN 6150-00-846-6167
NSN 6135-01-088-4301
NSN 6620-00-155-2608
NSN 5965-00-475-2759
NSN 5985-01-458-7898
NSN 5945-01-610-2539