EzioAltaïr;4059362 said:VA-111 Shkval - Wikipedia, the free encyclopedia
It's a "supercavitating" torpedo.
Whatever the hell that means.
The speed of the VA-111 far exceeds that of any standard torpedo currently fielded by NATO. This speed is a result of supercavitation: the torpedo is, in effect, flying in a gas bubble created by outward deflection of water by its specially shaped nose cone and the expansion of gases from its engine. By keeping water from coming into contact with the surface of the body of the torpedo, drag is significantly reduced, allowing extremely high speeds.