Submarine-based Helicopter

Israelis win award for submarine-based chopper

A small helicopter that can take off underwater from a submarine and hold two passengers - designed jointly by students at the Technion-Israel Institute of Technology in Haifa and the University of Pennsylvania - has won first prize in a US helicopter design competition. [...]
The helicopter is autonomous, can function in a variety of weather conditions and can be dispatched from a submarine from some 15 meters under the water's surface (enough for a periscope to see into the air from under the water.)
via: Submarine-based Chopper | Gadget Venue dot com
related: [PDF] Heli project 2007 ...