drillcentres subsea. The deepest (E)TLPs measured from the sea floor to the surface are: Big Foot ETLP Magnolia ETLP. Its total height is some . Marco Polo TLP Neptune TLP Kizomba A TLP Ursa TLP. Its height above surface is making a total height of . Allegheny TLP W. Seno A TLP Use for wind turbines Although the Massachusetts Institute of Technology and the National Renewable Energy Laboratory explored the concept of TLPs for offshore wind turbines in September 2006, architects had studied the idea as early as 2003. Earlier offshore wind turbines cost more to produce, stood on towers dug deep into the ocean floor, were only possible in depths of at most , and generated 1.5 megawatts for onshore units and 3.5 megawatts for conventional offshore setups. In contrast, TLP installation was calculated to cost a third as much. TLPs float, and researchers estimate they can operate in depths between 100 and and farther away from land, and they can generate 5.0 megawatts. Computer simulations project that in a hurricane TLPs would shift 0.9 m to 1.8 m and the turbine blades would cycle above wave peaks. MIT and NREL researchers say dampers could be used to reduce motion in the event of a natural disaster. MIT and NREL researchers plan to install a half-scale prototype south of Cape Cod. Sclavounos said, "We'd have a little unit sitting out there to show that this thing can float and behave the way we're saying it will." Blue H Technologies of the Netherlands deployed the world's first floating wind turbine on a tension-leg platform, off the coast of Apulia, Italy in December 2007. The prototype was installed in waters deep in order to gather test data on wind and sea conditions, and was decommissioned at the end of 2008. The turbine utilized a tension-leg platform design and a two-bladed turbine. Seawind Ocean Technology B.V., which was established by Martin Jakubowski and Silvestro Caruso - the founders of Blue H Technologies, acquired the proprietary rights to the two-bladed floating turbine technology developed by Blue H Technologies. See also Floating cable-stayed bridge Oil platform Magnolia (oil platform) Mars (oil platform) Olympus tension leg platform List of tallest structures References Further reading 2010 Worldwide Survey of TLPs (PDF) by Mustang Engineering for Offshore Magazine Fuentes, P. (2003) Reconversion d’une plate-forme offshore, Mémoire de TPFE, École d’architecture de Lille, France. Oil platforms Watercraft Petroleum