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USS Columbus (SSN 762) performing an emergency ballast blow. An emergency main ballast tank blow is a procedure used aboard a submarine that forces high-pressure air into its main ballast tanks. The high-pressure air forces ballast water from the tanks, quickly lightening the ship so it can rapidly rise to the surface.
As the high-speed maneuvers finished at 13:30, Waddle called for Greeneville to perform an emergency dive (called an "emergency deep") followed by an emergency main ballast blow, a maneuver that brings the submarine from a depth of about 400 feet (120 m) to the surface in a few seconds by using high-pressure air to force the water out of the ...
USS Pittsburgh demonstrates an emergency main ballast tank blow in 1991. Pittsburgh was officially deactivated on 17 January 2020 at the Undersea Warfare Museum in Keyport, Washington, and awaited the Submarine Recycling Program at Puget Sound Naval Shipyard in Bremerton, Washington. She was later decommissioned on 15 April 2020 and the crew ...
A Video released by the U.S. Navy shows the USS Hartford emerging from beneath the ice of the Arctic Circle.
This incident was revisited, when USS Greeneville, on 9 February 2001, also conducted an emergency main ballast tank blow off the coast of Oahu while hosting several civilians. Greeneville struck the 191-foot (58 m) Japanese fishery high school training ship Ehime Maru ( えひめ丸 ), causing the fishing boat to sink in less than ten minutes ...
Air dryers were later retrofitted to the high-pressure air compressors, beginning with Tinosa, to permit the emergency blow system to operate properly. [citation needed] Submarines typically rely on speed and deck angle (angle of attack) rather than deballasting to surface; they are propelled at an angle toward the surface. Ballast tanks were ...
A full emergency ballast blow brought the submarine to the surface, and the engine was restarted. [27] Farncomb was deployed to Hawaii to participate in the 2012 Rim of the Pacific (RIMPAC) multinational exercise. [28] On 22 July, the submarine fired a Mark 48 torpedo at the former ammunition ship USNS Kilauea, breaking the ship in two and ...
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