Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Transportation Vehicles (hierarchy name)
5. vehicles (transportation)
6. air and space transportation vehicles
7. aircraft
8. [aircraft by form]
9. lighter than air aircraft

Narrower term/s

• blimps
• zeppelins
• semi-rigid airships
• rigid airships[+]
  • zeppelins [NP]
• pressure-rigid airships

Anotations

Scope note:

Self-propelled and steerable lighter than air vehicles dependent on the displacement of air by a lighter gas for lift; generally composed of a streamlined hull, usually prolate ellipsoids, with one or more cells, a cabin for crew and passengers, and a propulsion system.