Anti-torpedo defenses seek to confuse the weapon

Are anti-torpedo torpedoes a practical defense?

They remain difficult; a rising acoustic decoy or a correctly placed explosive barrage may be more viable than a straightforward interceptor torpedo.

An anti-torpedo torpedo is an attractive but difficult goal. The more plausible concept described is a decoy or mine-like device that rises, creates vertical separation, and pulls an acoustic torpedo toward itself before detonating. Changing ocean layers can complicate homing and reduce the chance that the weapon continues toward the intended ship. A Soviet RBU barrage could also offer some anti-torpedo effect if the threat were detected early enough and explosives were placed correctly. These approaches defend through deception or a barrier in the weapon's path rather than a guaranteed interceptor duel.