How is an airship similar to a bathyscaphe?
Both platforms share many common features.
Airships
What can airships teach us about undersea inflatables?
What are the different types of airships?
Blimps, which have no internal structure, derive their shape entirely from the design and construction of their outer envelope. Semi-rigid airships have internal skeletons that provide structural support for internal and externally mounted hardware. The shape of a rigid airship is defined by an outer structural framework that is covered by a fabric skin.