I came across a site with lots of images of this mysterious ekranoplan.

I must say, its quite a unique machine

http://igor113.livejournal.com/51213.html

A translation of the main text on the page:

Here are my hands and came up ekranoplana.Ya break the story about him for 3 or 4 parts: 1-ekranoplan outside (1 or 2 parts) 2-ekranoplan inside, 3-docking the craft.
In 1987, the water went Lun first ship of a series of military missile-carrying WIG weighing 400 tons was the chief designer Vladimir Kirillov. The ship was armed with three pairs of cruise missile 3M80 or 80M "Mosquito" (the NATO designation SS-N-22 Sunburn). The second "Lun" also found a missile carrier, but the outbreak conversion brought about changes, and it planned to build a rescue.
LTH:
Modification Lun
Wingspan,  44.00 m
Length,  73.80 m
Height,  19.20 m
Wing area,  550.00m2
Empty aircraft 243000 kg
Maximum takeoff 380000 kg
Type 8 turbojet engine NK-87
Thrust, kgf 8 x 13000
Maximum speed, 500 km / h
Range, 2000 km
Height of the flight on the screen, 1.5 m
Seaworthiness, 5.6 points
Crew 10
Armament: 6 IP PKR ZM-80 Mosquito