Boats laden with explosives can be used against ships and areas connected to water. An early example of this type was the Japanese Shinyo suicide boats during World War II. The boats were filled with explosives and attempted to ram Allied ships, sometimes successfully, having sunk or severely damaged several American ships by war's end. Suicide bombers used a boat-borne IED to attack the USS Cole; US and UK troops have also been killed by boat-borne IEDs in Iraq. The Tamil Tigers Sea Tigers have also been known to use SWBIEDs during the Sri Lankan Civil War.