The development of the use of wind power in ships was forgotten for 100 years, but interest in it has been revived. The most extreme reach top speeds of over 50 knots. In cargo transportation, sail propulsion has been abandoned, while racing sailboats have developed tremendously, utilizing advanced wing sails and light-weight structure technology. 100 years ago, the last sailing ships in active service reached peak speeds of up to 17 knots when sailing from Australia to Europe – a speed that modern bulk carriers cannot reach.Īt the same time, the world’s largest and fastest sailboats reached speeds of over 11 knots in yacht races. Before the era of motor ships, shipping was based on wind power. It is completely pure, unpolluted energy that is freely available. Of the solar radiation energy that reaches the earth, 2–3% is released into the wind. Emission reduction targets force the development and application of new environmentally friendly technologies, such as wind power in shipping. However, there have been clear fuel economy benefits from the installations made. Suspected uncertainties have slowed the reemergence of wind-based propulsion. Many sail applications have been developed, but no real breakthrough has been achieved. Ever-tightening environmental regulations, combined with the pressure to lower fuel costs, have made wind power an attractive option as transport energy for ships.
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