Russia’s meanest, monstrous warship in the Black Sea

[GoodTaste]

Moreover, Neptune missiles are not necessarily “ship killers.” They were more likely designed to be “mission killers” — to disable the radar and electronics of sophisticated destroyers like the Moskva — not specifically sink them.

So I pity the commander who had to tell Putin that Russia’s meanest, monstrous warship in the Black Sea, rumored to have been his favorite, had been sunk by a Ukrainian missile fired in war for the first time.

Source: NYTimes

Does meanest mean insanely cool here?

 

[Tarheel]

I think it means scariest or most powerful. However, your interpretation is a valid one.

 

[jutfrank]

It means something like 'most capable of causing damage'.