Model of Rheinbote in the net
Wasserfall
The Wasserfall missile was developed at Peenemünde concurrently with the V-2 missile, and was one of the earliest attempts to develop a guided anti-aircraft missile. A supersonic missile, it would reach speeds of 770 m/s (about 1700 mph). Guidance was to be a combination of radar and radio control, with an operator on the ground steering it toward the radar return of enemy bombers. An acoustic proximity fuse would detonate the warhead when it got close enough to its target.
German plan to protect some 70 cities with a fourfold belt of antiaircraft rocket batteries.
dated April 30, 1943, calling for Wasserfall launch complexes with four pads each. Blast deflection walls can be seen around each pad
http://www.netaxs.com/people/ebailey/wasserfall.html
http://www.worldwar.nl/secretweapons/secretgerman2.htm