An item which is part of a sonar dome or sonar transducer and which is so constructed as to afford little attenuation to sonar frequencies while aiding to cut down the water resistance of the part with which it is used.
Classification: Ship' logs and depth-sounding apparatus for navigation
NSN 5975-00-711-8805
NSN 4140-01-535-3479
NSN 6240-01-160-7430
NSN 6130-00-971-1651
NSN 5999-01-443-3392
NSN 6685-01-059-5773
NSN 5905-00-553-9985
NSN 5895-01-094-7255
NSN 5935-01-555-8205
NSN 6645-01-477-5316
NSN 7035-01-570-3831
NSN 6620-01-516-3302