Lowered Sails (Italian: Vele ammainate) is a 1931 Italian drama film directed by Anton Giulio Bragaglia and starring Dria Paola, Carlo Fontana and Umberto...

Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight...

upper and lower sails was a matter of practicality, since undivided sails were larger and, consequently, more difficult to handle. Larger sails necessitated...

sail going downwind is predominated by drag forces. Sails are unable to generate propulsive force if they are aligned too closely to the wind. Sails may...

orient square sails fore and aft or to tension their leading edges (luffs), they are not as efficient upwind, compared with lug sails. The lug rig differs...

a topgallant sail (topgallant alone pronounced "t'gallant", topgallant sail pronounced "t'garns'l", is the square-rigged sail or sails immediately above...

junk sail plan and various designs exist. Square headed junk sails have parallel yards and booms and resemble rectangles. Fan-headed junk sails have yards...

There is a variety of sail plans that propel sailing ships, employing square-rigged or fore-and-aft sails. Some ships carry square sails on each mast—the brig...

A sail plan is a drawing of a sailing craft, viewed from the side, depicting its sails, the spars that carry them and some of the rigging that supports...

powered by their sails. Sails are found in different forms, from primitive common sails to the advanced patent sails. The jib sail is found in Mediterranean...