It was sluggish but the original concept was basically a giant superfast version of the Long Lance or other WW2 torpedoes. They didn’t have working homing or guidance either, which has the one advantage of not being jammable.
The Shkval 2 reportedly is much more maneuverable, incorporating vectored-thrust nozzles.
Yeah, my days of being cleared to read about that stuff were huge fun. The Russians came up with some ingenious stuff.
Defined what “thinking outside the box” came to mean.