Sail assisted vessels in small to medium size ranges--of 2,000 to 40,000 deadweight tons cargo capacity--could achieve fuel savings of 15 to 25 percent compared with conventionally powered ships, according to the study. The type of sail found to have the greatest economic potential is the wing sail rig or rigid airfoil. Resembling rectangular aircraft wings placed in upright position on a ship's deck, the wing sails can be rotated 360 degrees to obtain the best wind angle. These airfoil sails would be made of metal rather than cloth and their operation could be automated and remotely controlled. The study concluded that the wind sail rig has an economic advantage over both cloth sail rigs and conventional motor vessels in ships below 40,000 tons. The greatest advantages of sail assist would be realized by smaller vessels of 2,000 to 10,000 tons at present fuel prices. Because in new ship construction the cost of sailing rigs would be mostly offset by a reduction in the size of the power plant needed, a sail-assist vessel would cost about the same to build as a conventional motor ship, the study revealed.

  • Corporate Authors:

    Wind Ship Development Corporation

    Norwell, MA  United States  02061

    Maritime Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Publication Date: 1981

Media Info

  • Pagination: 278 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00331949
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Jun 12 1981 12:00AM