Notes
This class includes airborne, shipborne, and submarineborne sonar sets, assemblies, subassemblies, and components designed specifically for use with underwater fire control equipment.

Possible NAICS Codes
334511 – Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
334419 – Other Electronic Component Manufacturing
334512 – Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
339940 – Office Supplies (except Paper) Manufacturing
541330 – Engineering Services
541714 – Research and Development in Biotechnology (except Nanobiotechnology)