depth charge

A depth charge is an anti-submarine weapon used by ships during wartime to target submarines. It is a container filled with explosive that is set to detonate at a specific depth underwater. When a submarine is detected, the ship drops the depth charge into the water; it sinks to the predetermined depth and explodes, creating a powerful blast intended to damage or destroy the submarine. Depth charges rely on sonars or other detection methods to locate submarines and are an essential tool in underwater warfare.