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Such as, a vessel has a speed of 8 knots through the water and the vessel is traveling with the current, which is at 2 knots, then the speed over ground is 8+2 and the vessel's true speed is 10 knots. Set and Drift can be calculated by using a vector diagram and can be drawn and measured on a chart, maneuvering board or even a plain piece of paper.
The Los Angeles class of submarines are nuclear-powered fast attack submarines in service with the United States Navy. Also known as the 688 class (pronounced "six-eighty-eight") after the hull number of lead vessel USS Los Angeles (SSN-688) , 62 were built from 1972 to 1996, the latter 23 to an improved 688i standard.
USS Los Angeles (SSN-688), lead ship of her class of submarines, was the fourth ship of the United States Navy to be named for Los Angeles, California. The contract to build her was awarded to Newport News Shipbuilding and Dry Dock Company in Newport News, Virginia on 8 January 1971 and her keel was laid down on 8 January 1972.
The test is conducted by towing the open water boat at a steady speed while running the propeller at a constant revolution rate. The speed of the boat (speed of advance VA), and the revolution rate n, thrust T and torque Q of the propeller are measured in each run.
The vessel is 85 feet (26 m) long with a displacement of 99 tons. The hull is made of planked mahogany. It had twin screws, powered by two Caterpillar D343 turbo diesel engines, each producing about 450 hp. Although the nominal cruising speed was about 10 knots, the Vantuna could reach a maximum speed around 14 knots. Fuel consumption ranged ...
USS Alexandria (SSN-757), is a Los Angeles class nuclear-powered attack submarine and the third vessel of the United States Navy to be named for both Alexandria, Virginia, and Alexandria, Louisiana. [2] The contract to build her was awarded to the Electric Boat Division of General Dynamics Corporation on 26 November 1984.
The 171-mile stretch of rail running between Merced and Bakersfield could be operational as early as 2030, with testing of the bullet trains slated to begin in 2028, according to the High-Speed ...
DSRV-1 Mystic on display at United States Naval Undersea Museum, Keyport, Washington Mystic on display at the Naval Undersea Museum after 2021 restoration. DSRV-1 Mystic is a deep-submergence rescue vehicle that is rated to dive up to 5,000 feet (1,500 m).