In the period from 1970 to 1985 at the Almaz Production Association (in Leningrad) 20 assault hovercraft of this type were built (1 ship of project 1232* and 19 ships of project 12321)

Displacement: standard - 310 long tons and 350-360 t full load
Length 47.8 m
Beam 19.4 m
- height - 21.9 m;
- flexible fence height - 2.2 m;
- draft at full displacement - 1.3 m
Propulsion 2 × 9,600 hp (7.2 MW) DT-4 Kuznetsov NK-12MV gas turbines driving 4 axial lift fans and 4 propeller units (4 × four-bladed variable-pitch propellers, 2 pusher, 2 tractor)
Speed 70 knots (130 km/h; 81 mph)
Range 300 nmi at 50 kn (500 nmi max.)
Capacity:
80 tons
or 4 light tanks
or two medium tanks (or two MBT)
or five armored personnel carriers
or 200 troops
Crew: 21 (3 officers)
Electronic:
- radar of general detection - "Balkan" or "Mius" ("Donets-2" *)
- identification station - "Nichrome"
Armament:
2 × twin AK-230 30 mm (1 × twin AK-230 30 mm *)

* - on MDK-167 (1232 pre-production)

music:
. Matthias Ullrich and Raffael Gruber - Hooligan
. Matthias Ullrich and Raffael Gruber - Halo Effect
. Bobby Richards - Lens