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Tunneling speeds increase over time. The first TBM peaked at 4 meters per week. This increased to 16 meters per week four decades later. By the end of the 19th century, speeds had reached over 30 meters per week. 21st century rock TBMs can excavate over 700 meters per week, while soil tunneling machines can exceed 200 meters per week.
The world unlimited water speed record is the officially recognised fastest speed achieved by a water-borne vehicle, irrespective of propulsion method. The current unlimited record is 511.11 km/h (317.59 mph; 275.98 kn), achieved by Australian Ken Warby in the Spirit of Australia on 8 October 1978.
The following is a list of speed records for various types of vehicles.This list only presents the single greatest speed achieved in each broad record category; for more information on records under variations of test conditions, see the specific article for each record category.
Freighter Fairpartner carrying the disassembled tunnel boring machine into the Port of Seattle in April 2013. Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and was the world's largest earth pressure balance tunnel boring machine, [14] at a cutterhead diameter of 57.5 feet (17.5 m) across.
Balanced on the side of one hull, New Zealand’s black catamaran glides over the finish line at the deep-water Zayed Port, its 29-meter-long carbon fiber wing stiff in the sea breeze. Just meters ...
Spirit of Australia in which Ken Warby set the world water speed record in 1978 on Blowering Dam, New South Wales, Australia. In the Australian Maritime Museum in Sydney. Spirit of Australia is a wooden speed boat built in a Sydney backyard, by Ken Warby, that broke and set the world water speed record on 8 October 1978. [1] [2] [3]
Teenager Pan Zhanle swam the fastest 100 meters in history as he led off China's gold medal-winning 4x100 freestyle relay team. This morning (in heats), the U.S.,
Model of Spirit of Australia in which Ken Warby set the world water speed record in 1978 on Blowering Dam. Ken Warby MBE (9 May 1939 – 20 February 2023) was an Australian motorboat racer, who at his death held the water speed record of 275.97 knots (511.10 km/h; 317.58 mph), set on Blowering Dam on 8 October 1978.