Includes
Masts; Kingposts; Sail Booms; Shipborne Booms not attached to Cranes and Derricks.

Excludes
Tackle Blocks.

Possible NAICS Codes
333923 – Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
336214 – Travel Trailer and Camper Manufacturing
314994 – Rope, Cordage, Twine, Tire Cord, and Tire Fabric Mills
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
332618 – Other Fabricated Wire Product Manufacturing
336611 – Ship Building and Repairing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
336212 – Truck Trailer Manufacturing
336612 – Boat Building
332312 – Fabricated Structural Metal Manufacturing