engines | Two Right-Typhoon motors
| Two GAM-34B 850 hp each (from IX seria - two motors 1000 hp each, XII seria - two motors 1150 hp each)
| Three GAM-34BS 2550 hp total
| Three Packard 3600 hp total
| Two Packard 2400 hp total
|
Armament
| 7,62-mm DA + Two 450-mm rear torpedo launchers
| Two DA (ShKAS from X seria, one DShK from 1941) + Two 533-mm rear torpedo launchers;
some upgun modifications
| Two 12,7-mm DshK + Two 533-mm side torpedo launchers BS-7 + depth charge launcher (8 bombs BM-1)
| Two 12,7-mm DshK + 20-mm or 25-mm cannon + Two 533-mm side torpedo launchers BS-7 + 1 depth charge launcher (8 bombs BM-1)
| Two dual 12,7-mm + Two 533-mm pipe torpedo launchers BS-7 +
Two depth charge launchers (6 bombs M-1)
|