Diamondback assembled engines for the world's largest airboat in 1994 for use on the Congo River and shipped more than 24 twin engine airboats went Russia for an oil exploration in the Caspian Sea.
It was also used for the up-engined GAZ-98K aerosani winter-used sled in a pusher configuration (as airboats use today), and as the standard powerplant for the similar NKL-26 propeller-driven sledges during the World War II years.