Net cutter

1. (Fisheries patrol), also trawl wire cutter: A device employed by the Icelandic Coast Guard during the "Cod Wars" to cut the trawling wires of foreign fishing trawlers working within Iceland's claimed exclusive fisheries zones.
2. (Submarine): A device, sometimes powered by explosives, mounted on the bow of a submarine to cut through anti-submarine netting.
3. (Torpedo): A scissors-like or pistol-powered device on the nose of a torpedo intended to assist the torpedo in breaking through torpedo nets.