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
So, you have to be accurate. Like we've been doing for hundreds of years with projectiles, even non-guided ones. Check.
So... good like as in a computer doing the math? Check.
Bad news friend, they can't turn for shit due to ground effect, and they can't ascend or descend either. There's a reason these things were immediately abandoned as a viable concept after only 3 years in operation and without seeing any combat.