Ultra Trencher 1

Ultra Trencher 1

Ultra Trencher 1 (UT1) is (as of 2008) the world's largest submersible robot, used for burying undersea pipelines in a trench in the sea floor. [http://blogs.zdnet.com/emergingtech/?p=870 The world’s biggest subsea robot | Emerging Technology Trends | ZDNet.com ] ] It has a mass of 60 tons and measures 7.8 meters long, 7.8 meters wide, and 5.6 meters tall. It costs roughly £10 million. It can move at a speed of 2 to 3 knots when submerged and can trench pipelines with a 1-meter diameter water up to 1,500 meters deep. It uses a pair of "jet swords" to create the trench by injecting pressurized water into the sediment.

UT1 is manufactured by the Newcastle upon Tyne company Soil Machine Dynamics.

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