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The increased low wind capabilities of optimized, modern devices enable downwind steering down to 1.3 m/s apparent wind and 1.5 kn of boat speed [8] [9] – properties that make an electronic steering device nearly redundant and enable crossing the doldrums under wind vane self-steering. An increasing number of long distance regatta sailors are ...
The 12 Metre class was used in the Olympic Games of 1908, 1912 and 1920 but few boats participated in these events. The 12 Metre class boats are best known as the boat design used in the America's Cup from 1958 to 1987. Competitiveness between boats in the class is maintained by requiring the boats to be in compliance with the 12 Metre formula.
Energy Observer is a floating laboratory, [8] destined to test an innovative energy architecture in extreme conditions, to prove its feasibility onshore. The energy system encompasses 3 renewable energy sources (sun, wind and hydropower) and two types of storage (li-ion batteries for the short-term and hydrogen for the long-term).
Nicknamed "Lego Boat" because the yacht (keels, rigs, rudders, bustles) could be set-up in different configurations as a 12 Meter. She portrayed Boomerang and later Platypus in the 1992 film Wind and was in the TV series "No Boundaries". In 2015 the New York Harbor Sailing Foundation signed a deal to acquire US 42, the sister-ship to America II ...
While consuming only a fraction of the energy generated before, the generator now acts as a motor and reels-in the tether. [12] The system continuously repeats this process, flying the kite at an altitude of 200 to 400 meters. Energy generated by the Airborne Wind Energy System can be fed into the grid, stored in batteries, or directly consumed.
A velocity prediction program (VPP) is a computer program which solves for the performance of a sailing yacht in various wind conditions by balancing hull and sail forces. VPPs are used by yacht designers, boat builders, model testers, sailors, sailmakers, also America's Cup teams, to predict the performance of a sailboat before it has been built or prior to major modifications.
Download as PDF; Printable version; In other projects ... Gretel is an Australian racing yacht in the 12-metre class that unsuccessfully challenged for the 1962 ...
Wind-assisted propulsion is the practice of decreasing the fuel consumption of a merchant vessel through the use of sails or some other wind capture device. Sails used to be the primary means of propelling ships, but with the advent of the steam engine and the diesel engine, sails came to be used for recreational sailing only. In recent years ...