https://en.wikipedia.org/wiki/Lun-class_ekranoplan
Only one built, and it's still on the shore of the Caspian sea:
- OpenStreetMap: https://www.osm.org/?mlat=41.94067&mlon=48.37885&zoom=18&layers=M
- Gmaps satellite: https://www.google.com/maps?ll=41.94067,48.37885&q=41.94067,48.37885&hl=en&t=h&z=18
General characteristics
- Crew: 15 (6 officers, 9 enlisted)
- Capacity: 137 t (302,000 lb)
- Length: 73.8 m (242 ft 2 in)
- Wingspan: 44 m (144 ft 4 in)
- Height: 19.2 m (63 ft 0 in)
- Wing area: 550 m2 (5,900 sq ft)
- Empty weight: 286,000 kg (630,522 lb)
- Max takeoff weight: 380,000 kg (837,757 lb)
- Powerplant: 8 × Kuznetsov NK-87 turbofans, 127.4 kN (28,600 lbf) thrust each
Performance
- Maximum speed: 550 km/h (340 mph, 300 kn)
- Cruise speed: 450 km/h (280 mph, 240 kn) at 2.5 m (8 ft)
- Range: 2,000 km (1,200 mi, 1,100 nmi)
- Service ceiling: 5 m (16 ft) in ground effect
Armament
- Guns: two 23mm Pl-23 cannon in a twin tail turret and two 23mm Pl-23 cannon in a twin turret under forward missile tubes
- Missiles: six launchers for P-270 Moskit Sunburn antiship missiles
wow, could only fly a few meters above sea level, so anytime the water was choppy, this thing just... wouldn't be able to fly. Such an odd design
It was probably developed to push the limits of ground effect, since it can provide such a great advantage to travel efficiency. Think min-maxing to find the meta in a new competitive game.
This and other older ekranoplanes were only used on the Caspian, Black and Baltic sea, where huge waves are rare.