Whitehead Mark 1B torpedo

• Name — Whitehead Mark 1B torpedo • Origin — Austria-Hungary • Type — Anti-surface ship torpedo • Is Ranged — yes • Is Explosive — yes • Is Missile — yes • Service — 1894–1922 • Used By — United States Navy • Designer — Robert Whitehead • Manufacturer — Torpedofabrik Whitehead & Co. E. W. Bliss Company • Design Date — 1892 • Weight — 1160 pounds • Length — 197 inches (5.0 meters) • Diameter — 17.7 inches (45 centimeters) • Range — 800 yards • Filling — wet guncotton • Filling Weight — 220 pounds • Detonation — War Nose Mk 1 contact exploder • Engine — 3-cylinder reciprocating • Speed — 27.5 knots • Guidance — depth control, gyroscope • Launch Platform — battleships and torpedo boats

The Mark 1B was ordinarily assembled into three sections: the warhead, the air flask and the after-body. The warhead carried the explosive charge of wet guncotton. The Mark 1B was a "cold-running" torpedo. The three-cylinder reciprocating engine ran on cold, compressed air which was stored in the air flask at 1350 pounds per square inch. The after-body carried the engine and the tail, which contained the propellers. The Mark 1B guidance component included the Pendulum-and-hydrostat control device which was called the "Whitehead Secret" and, for the last forty units of the production, the Obry steering gyro for azimuth control. This device reduced the maximum deviation right or left of the target from 24 to 8 yards. The Mark 1B was launched from battleships and torpedo boats.