The Lun-class ekranoplan (NATO callsign: Duck) is an ekranoplan, which is a type of ground effect vehicle created in the Soviet Union. Several of these ekranoplans were used during the Invasion of Norway to transport the invading Soviet forces on the Norwegian coast. It is smaller than the KM prototype, and was purpose built for swift and efficient amphibious assault craft. Its main offensive weapon is a six pack of P-270 Moskit Surface to Surface Missiles. The translation of "Lun" is Harrier.