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From time to time, the tree of liberty must be watered with the blood of tyrants and patriots. -- Thomas Jefferson |
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Deep Submergence Rescue Vehicles perform rescue operations on submerged, disabled submarines of the U.S. Navy or foreign navies. Features DSRVs are designed for quick deployment in the event of a submarine accident. DSRVs are transportable by truck, aircraft, ship, or by specially configured attack submarine. At the accident site, the DSRV works with either a "mother" ship or "mother" submarine. The DSRV dives, conducts a sonar search, and attaches to the disabled submarine?s hatch. DSRVs can embark up to 24 personnel for transfer to the "mother" vessel. The DSRV also has an arm to clear hatches on a disabled submarine and a combined gripper and cable cutter. The gripper is able to lift 1,000 pounds. Background DSRVs were developed as a result of the USS Thresher submarine accident in 1963, when all hands were lost. At the time, submarine operating depths greatly exceeded the capabilities of rescue vessels. The Deep Submergence Systems Project contracted with Lockheed Missiles and Space, Co. to produce a deep diving rescue submarine, the first of which was launched in 1970. General Characteristics, DSRV Builder: Lockheed Missiles and Space, Co., Sunnyvale, CA. Propulsion: Electric motors, silver/zinc batteries, one shaft, 15 shaft horsepower, four thrusters, 7.5 horsepower. Length: 49 feet (15 meters). Beam: 8 feet (2.4 meters). Displacement: 8 feet (2.4 meters). Speed: 4 kts. Depth: Maximum: 5,000 feet (1524 meters). Crew: Two pilots, two rescue personnel and the capacity for 24 passengers. Electronics: Sonar: Search and navigation. Ships: Mystic (DSRV 1) Avalon (DSRV 2) |
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This Day in History
1461:
Edward IV defeats Henry VIs Lancastrians at the battle of Towdon.
1847: U.S. troops under General Winfield Scott take possession of the Mexican stronghold at Vera Cruz. 1865: The final campaign of the war begins in Virginia when Union troops of General Ulysses S. Grant move against the Confederate trenches around Petersburg. General Robert E. Lees outnumbered Rebels were soon forced to evacuate the city and begin a desperate race west. 1879: British troops of the 90th Light Infantry Regiment repulse a major attack by Zulu tribesmen in northwest Zululand. 1916: The Italians call off the fifth attack on Isonzo. 1917: Marines garrison St. Croix to deny harbor to German submarines. 1936: Italy firebombs the Ethiopian city of Harar. 1941: The British sink five Italian warships off the Peloponnesus coast in the Mediterranean. 1942: British cruiser Trinidad torpedoes itself in the Barents Sea. 1942: German submarine U-585 sinks. |