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(EXTERIOR SHOTS) With the ever-present threat of another energy-crisis foremost in everyone's mind, methods of reducing consumption of limited resources are more and more in demand. Nippon Kokan .... a major Japanese industrial concern .... has started to look at ways of using natural energy sources to power it's fleet of tankers ..... The 7.7 ton "Diao" is an experimental vessel that features prominently in that plan .... It's a 25 to 1 scale model of a 450,000 ton vessel, and the company's engineers are using it to test a variety of theories: the design of the sails, the materials used in making them, and how effectively they can be used alongside engines, as well as in what combinations and locations aboard the craft.
(CREW WITH INSTRUMENTS) Speed is just one of the measurements taken using a variety of sophisticated instruments .... All the data is monitored aboard using special equipment. The angle of the sails may be varied and the changes recorded .... the wind velocity and it's effects on the vessel are noted .... and the craft's stability in all weather conditions. The crew takes detailed notes of their measurements and works out complicated equations .... For example, given a wind speed of 15 metres, the vessel could make an average of 15 knots under the present rigging ... Who says the days of sailing ships are over?
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