The U.S. Navy's Mark 48 Torpedo Should Never Be Questioned

Watch a Torpedo Destroy Ex-USS Ingraham Frigate

This is what it looks like when a MK-48 torpedo breaks your keel

The Mk48 can be guided by a wire that reels out behind it, or it can find the target by itself. Once it gets close enough to the target, it first uses sonar to aim for the centre of the ship. When it's really close, it uses the magnetic signature of the target as a trigger to explode, when it's about 15 metres directly under its hull. The 267 kg of high explosive almost instantaneously all turn into a huge volume of gas. Second, the shock wave crushes the underside of the hull, and also lifts it

Mark 50 torpedo - Alchetron, The Free Social Encyclopedia