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 5990-01-081-0619
NSN 6145-01-513-9750
NSN 6620-01-290-2973
NSN 5990-01-242-9653
NSN 6240-01-546-8755
NSN 5895-00-483-3127
NSN 5996-01-466-7643
NSN 5990-00-503-4162
NSN 5999-01-551-1212
NSN 6145-01-399-8414
NSN 5998-00-062-0024
NSN 5930-00-926-7544