The Chilean submarine Fresia was an H-class submarine of the Chilean Navy.
'''H2O''' is the chemical formula for water, ice or steam which consists of two atoms of hydrogen and one atom of oxygen.
Halloween H20: 20 Years Later is a 1998 American slasher film directed by Steve Miner.
The McDonnell XH-20 Little Henry was a 1940s American experimental lightweight helicopter designed and built by McDonnell Aircraft.
The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5L 3 main "G" used in the 1960s.
Uveitis is the inflammation of the uvea, the pigmented layer that lies between the inner retina and the outer fibrous layer composed of the sclera and cornea.
The Xian H-20 (alternatively Xian H-X) is a subsonic stealth bomber design of the People's Liberation Army Air Force, due to enter service in the future.