Search results
Results From The WOW.Com Content Network
Wind-assisted propulsion is the practice of decreasing the fuel consumption of a merchant vessel through the use of sails or some other wind capture device. Sails used to be the primary means of propelling ships , but with the advent of the steam engine and the diesel engine , sails came to be used for recreational sailing only.
She was the fifth of seven completed ships of the Wind class of icebreakers operated by the United States Coast Guard. She was laid down on 20 July 1944 at Western Pipe and Steel Company shipyards in San Pedro , California , launched on 25 February 1945 [ 2 ] and commissioned on 28 July 1945.
Early ships used stern or side paddle wheels, which gave way to screw propellers. The first commercial success accrued to Robert Fulton's North River Steamboat (often called Clermont) in US in 1807, followed in Europe by the 45-foot (14 m) Comet of 1812. Steam propulsion progressed considerably over the rest of the 19th century.
The shaft was clamped and the ship limped back to Boston mid-Summer 1968, on one propeller shaft, for drydock repairs in East Boston. This negated a planned liberty port call in Edinburgh, Scotland. Eastwind departed Boston 3 weeks later and returned to salvage the remaining Arctic-East summer navigation season in the Greenland Sea.
According to the Cousteau Society, "when compared to the thrust coefficient of the best sails ever built (Marconi or square types, i.e. ships of the American Cup [sic] or the Japanese wind propulsion system) that of the turbosail is 3.5 to 4 times superior and gives the system a unique advantage for the economical propulsion of ships."
Henrietta Vansittart, born Henrietta Lowe, was born in Ewell, Surrey in 1833. [4] [5] She was one of eight children born to James and Marie Lowe, née Barnes. [6]Her father James Lowe was a blacksmith-inventory working on ship propulsion and applying for related patents using his wife's money and connections.
no auxiliary propulsion; donkey engine for sail winches, steam rudder, generator: Propulsion: wind: Sail plan: 25 sails: 7 gaff main sails (No. 1 to 6 of equal size, spanker sail of larger size), 7 gaff topsails, 6 staysails, 5 foresails with 43.000 sq ft (4,000 m²) [46,617 sq ft (4,330.86 m²)] sail area: Speed: 16 knots (29.632 km/h) Boats ...
While the design is meant to be usable for different types of ships and even retrofitted to existing vessels, [7] the first vessel from the Oceanbird concept is planned to be a 200 m (660 ft) long roll-on/roll-off ship with a capacity of up to 7,000 cars. Such ships are optimized for transatlantic routes. The first vessel based on the concept ...