ELI5: Explain Like I'm 5

VA-111 Shkval

Va-111 Shkval is a type of torpedo. Torpedoes are weapons that are fired from submarines or ships underwater. They are designed to swim towards an enemy ship and explode when they get close, which causes damage to the enemy ships. The Va-111 Shkval is different because it is a type of super-fast torpedo that is designed to move much faster than other torpedoes, and so it can reach its target more quickly, making it harder for the enemy to dodge or avoid.