The C7 is the one that Says DIMACO on it! ;D
And even after looking at my Janes Warship Recognition Guide (1996) Im still not too sure what the Differance between a Krivak I, II, or III class is... apart from the Class III being the most modern...
then again... Im a trucker... If i have to worry about a soviet warship, then something has probabbly gone terribly terribly wrong! ;D
Cheers