This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Depth Charge Tracks; Torpedo Tubes.
Possible NAICS Codes
332994 – Small Arms, Ordnance, and Ordnance Accessories Manufacturing
332321 – Metal Window and Door Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
336611 – Ship Building and Repairing
332510 – Hardware Manufacturing
336419 – Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing
334413 – Semiconductor and Related Device Manufacturing