Torpedo

The modern torpedo is a self-propelled weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with its target or in proximity to it.

Historically, it was called an automotive, automobile, locomotive or fish torpedo; colloquially called a fish. The term torpedo was originally employed for a variety of devices, most of which would today be called mines. From about 1900, torpedo has been used strictly to designate an underwater self-propelled weapon. The original torpedo is a kind of fish: an electric ray.

While the battleship had evolved primarily around engagements between armoured ships with large-caliber guns, the torpedo allowed torpedo boats and other lighter surface ships, submersibles, even ordinary fishing boats or frogmen, and later, aircraft, to destroy large armoured ships without the need of large guns, though sometimes at the risk of being hit by longer-range shellfire.

Today's torpedoes can be divided into lightweight and heavyweight classes; and into straight-running, autonomous homers, and wire-guided. They can be launched from a variety of platforms.

Read more about Torpedo:  Etymology, History, Propulsion, Guidance, Warhead and Fuzing, Control Surfaces and Hydrodynamics, Launch Platforms and Launchers, Torpedo Handling Equipment, Torpedo Classes and Diameters

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Brennan Torpedo
... The Brennan torpedo was a torpedo patented by Irish born Australian inventor Louis Brennan in 1877 ... propellors that were spun by rapidly pulling out wires from drums wound inside the torpedo ... the wires connected to the shore station allowed the torpedo to be guided to its target, up to 2,000 yards (1,800 m) away, at speeds of up to 27 knots (31 mph) ...
Torpedoes Used By Various Navies - U.S. Navy
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Anti-submarine Warfare - History
... using what would now be called a naval mine but what then was called a torpedo, though various attempts to build submarines had been made before this ... The first self-propelled torpedo was invented in 1863 and launched from surface craft ... The first submarine with a torpedo was Nordenfelt I built in 1884-1885, though it had been proposed earlier ...
Fast Attack Craft - History
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