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.
Propulsion Shafts; Ship Propellers; Marine Transmissions, Reverse and Reduction Gear Type.
Engines (FSC 2810, 2815); Turbines (FSC 2825, 2835, 2840).
Possible NAICS Codes
336611 – Ship Building and Repairing
333618 – Other Engine Equipment Manufacturing
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
336612 – Boat Building
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336415 – Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing
331529 – Other Nonferrous Metal Foundries (except Die-Casting)
441222 – Boat Dealers
339991 – Gasket, Packing, and Sealing Device Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing