According to the Associated Press, the crew of the Seabourn Spirit, the cruise ship attacked by pirates off the coast of Somalia Saturday, used a sonic weapon against the attackers.
The sonic weapon, known as a Long Range Acoustic Device (LRAD), blasts earsplitting noise in a directed beam. The LRAD was developed after the 2000 attack on the USS Cole in Yemen as a non-lethal way to keep operators of small boats from approaching U.S. warships. It has also been used in Iraq to control crowds.
Images from American Technology Corporation.