paravane

noun

1. an underwater defensive device against mines, consisting of a pair of torpedo-shaped vanes towed at the bow of a ship, usually a minesweeper, by cables that can cut the cable of a moored mine, causing the mine to rise to the surface, where it can be destroyed or removed from the water.

noun

1. a torpedo-shaped device towed from the bow of a vessel so that the cables will cut the anchors of any moored mines