Spar torpedo

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(Naut.) a torpedo carried on the end of a spar usually projecting from the bow of a vessel, and intended to explode upon contact with an enemy's ships.
a canister or other vessel containing an explosive charge, and attached to the end of a long spar which projects from a ship or boat and is thrust against an enemy's ship, exploding the torpedo.

See also: Spar, Torpedo

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
He was released and returned to Charleston, commanding the spar torpedo launch Torch for an attack on the USS New Ironsides, and was appointed superintending captain of the South Carolina Importing and Exporting Company and moved to Scotland to commission six new steam runners.
Their weapon was a spar torpedo, a ninety-pound charge at the end of a long pole jutting forward from the Hunley's bow.
Hunley became the first submarine to sink an opposing vessel in time of war when, on 17 February 1864, it detonated a spar torpedo against the hull of USS Housatonic, which was on blockade duty off Charleston, South Carolina.
Tour stops include Alden Park, where a medley of monuments provides snapshots of American military history: There's a cannon from the War of 1812, spar torpedoes from the Civil War, and a German Marder suicide submarine from 1944.