Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. industrial structures
9. industrial buildings
10. factories (structures)
11. [factories by power source]
12. water mills

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment
4. Transportation Vehicles
5. vehicles
6. watercraft
7. watercraft by specific type
8. watercraft by function

Anotations

Scope note:

Mills consisting of one or more boats equipped with waterwheels, moored in mid-stream by connections to the bank and used for various purposes including grinding grain or paper pulp and supporting military machinery.