[Paleopsych] Fuel-saving of 50% possible with modern WindShips.
shovland at mindspring.com
Tue Oct 26 03:18:55 UTC 2004
Fuel-saving of 50% possible with modern WindShips. A new efficient rig
design, combined with an especially developed underwater hull, promises to
cut the fuel consumption by half on selected ocean routes. This is the
message from a newly held seminar in Copenhagen where Knud E. Hansen, Naval
Architects and Marine Engineers presented their study "Modern WindShips,
In 1995 the Danish Ministry of Environment and Energy granted funding for
Knud E. Hansen A/S to investigate the feasibility of adding sail assisted
power to propel commercial ships. In the Phase 1, which was finished in
November 1996, a broad background of various projects from the last 30
years, involving sailing and sail assisted ships, were investigated. The
study envisaged a new type of sailing vessel named "Modern WindShip" with a
length of about 200 m and a dead weight of 50.000 tonnes. The proposed
WindShip was compared to conventional ships, and it was concluded that in
spite of significant fuel savings an increased overall transportation cost
of approx. 10% resulted.
The Phase 2 resulted in a new innovative rig design, with complete
mechanical layout and a new underwater hull, specifically designed for the
dual propulsion using both wind and diesel power. An economical feasibility
study confirmed that the 10% higher freight rate was necessary for the
WindShip. This stems from the fact that the construction and running costs
are slightly higher for the WindShip at the present stage. There are
reasons to believe that further technical simplification and optimisation
will reduce the price gap between conventional and wind assisted ships.
On routes with reasonable weather wind conditions, like in the Atlantic
Ocean, fuel savings of about 27% can be obtained. On routes where the
superior internal volume capacity of the WindShip can be properly utilised,
fuel savings of 50% are possible. This corresponds to an annual fuel saving
of approximately4800 tonnes, having large beneficial effects on the
environment by reducing harmful emissions of CO2, SOx and NOx.
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