| Short Mark 7 torpedo | |
| Origin: | United States |
| Type: | Torpedo |
| Is Ranged: | yes |
| Is Explosive: | yes |
| Is Missile: | yes |
| Used By: | United States Navy |
| Designer: | Washington Navy Yard[1] |
| Design Date: | 1917 |
| Weight: | 1036 pounds |
| Length: | 144 inches |
| Diameter: | 17.7 inches (45 centimeters) |
| Range: | 2000 yards |
| Filling Weight: | 281 pounds |
| Detonation: | Mk 3 contact exploder |
| Engine: | Turbine |
| Speed: | 35 knots |
| Guidance: | Gyroscope |
| Launch Platform: | Submarines |
The Short Mark 7 torpedo was a variant of the Bliss-Leavitt Mark 7 torpedo developed by the Washington Navy Yard in order to fit certain submarine torpedo tubes in 1917. The Short Mark 7, also designated Torpedo Type D,[2] had an air flask that was shortened and a reduced warhead weight. The fuel and water tanks were relocated to obtain more air flask capacity; the fuel tank was mounted in the aft air flask bulkhead, while the water tanks were mounted in the after-body. The overall weight of the warshot torpedo was 590 pounds lighter and 58 inches shorter than the Mark 7. The air, fuel and water capacities were approximately one-third of the capacities found on the full-size Mark 7. This torpedo was never produced in quantity.[1]