Police airship

The Police airship is a large metal zeppelin-like structure used in Republic City used by the police force to patrol the city from above.

History
Towards the end of the Hundred Year War, the Fire Nation had been able to design and manufacture large airships to aid them in defeating the Earth Kingdom. At some point after the War, the airship designs were modified and used by Republic City's police force. There appear to be a number of these airships being used by Republic City police force.

Design
The design of these aircraft are very similar to the Fire Nation airships used at the end of the Hundred Year War. They appear to be made entirely out of metal, and utilize a number of propellers to make them move. The airships also have a cockpit on the underside of the craft where metalbenders are able to fire their metal ropes from.