As of today, Force Technology of Denmark is conducting sea trials of a new air cushion technology that may be able to reduce the energy consumption of large container vessels and freighters and limit CO2 emissions. The Air Cavity System (or ACS) as the new technology is called, is developed by the Danish inventor, Jørn Winkler (DK Group). This new technology is based on pumping compressed air into an elongated cavity under the vessel’s hull, creating a cushion of air that reduces the frictional resistance between the hull and surrounding water. Based on model tests of 8m scale models at Force Technology, Division for Maritime Industry, the ACS technology indicates savings of 10-15% in calm weather conditions, which for a 300,000 DWT VLCC corresponds to annual fuel savings of approximately DKK 3.5 million, and reduced CO2 emissions of approximately 6,000 tons per year.
This technology will surely reduce fuel consumption, irrespective of the ship's engine and propulsion design.
Source: http://www.marinetalk.com/infodesk.asp?category=TU
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