QinetiQ subsidiary Foster-Miller, has been awarded a $1 million contract to further develop its advanced Boat Trap system by the United States Department of Defense Joint Non-Lethal Weapons Directorate, working closely with the US Coast Guard.

Designed to bolster US harbour security and protect coastal military bases abroad, Boat Trap is a non lethal, ballistic net that is deployed from a helicopter into the path of a threatening speedboat travelling at high speed. It is designed to entangle the propeller, causing the craft to immediately stop.
LOL. Paying $1million for throwing a salmon net into the path of a boat from a heli!!