Re: Tropedos, are they still useful in a surface battle?
Before anyone brings up the Shkval, it is not an anti ship weapon, it is a weapon designed to be launched when an enemy torpedo is bearing down at your own sub, a revenge weapon in a way.
I actually don't know of any heavy-wheight torpedo mounted on a surface ship anymore.
The Nixie is basically a loudspeaker coupled with a pick-up towed behind a boat, it recieves the 'ping' from active torpedoes and sends it back amplified to two or three times its original strength.