The KM (Korabl Maket, literally ""Model-Ship""), known colloquially as the Caspian Sea Monster, was an experimental ground effect vehicle developed in the 1960s.
The KM was the largest and heaviest aircraft in the world from 1966 to 1988, and its surprise discovery by the United States and the subsequent attempts to determine its purpose became a distinctive event of espionage during the Cold War.
Mechanical
Parts pcs. 77
