This veil is part of family aft sails. It still increases performance by reducing the entire surface of mast backwards, releasing the front portion thereof for the installation of jibs. The shape of a sail that dumps a lot at the horn, making it less effective but still allows large sails to carry a short mast (Key West sail and snorkel). Constraints have allowed only very recently to get closer without having to use many spars and running rigging, whose weight and windage often compensate for the gain provided. It was used since ancient times known way from the Baltic to Mediterranean on merchant and military vessels, whether sea or river.
That's why sailors always changing their settings to keep them as close as possible the separation sails without the to stall. This requires constant attention, because the setting must be adapted to changes in speed, heading, and wind changes. Strands of wool or ribbons (favors) are often set in various parts of hollow sails to materialize flow nets wind, and report the stall.
To improve the performance sailboats, speedboats architects also influence the shape of mast (wing masts) to further improve these flows. Resembling the close, sailing has a propulsive force as its angle relative to apparent wind is still large enough (about twenty degrees). This has the consequence that it is possible with a vehicle with a low resistance to progress, to go faster than the true wind. This is the case for example windsurfers, multihulls, mono hulls designed some of Planing and tanks to sails. Craft being the fastest sailing ice tanks capable of reaching four to five times the speed of wind.
The compilation and publication in mid-nineteenth century by American captain Matthew Fontaine Maury of wind charts (sum of statistics from the prevailing winds by sectors) on charts has identified roads where the downwind (trade winds, winds commercial) were the most consistent and powerful as these rigs are effective. He contributed to development of so-called large "square-rigged" sailing (for the general appearance they had recalling the silhouette of a lighthouse).
It was during the first half of twentieth century disappears little by little the veil, especially with the end of tall ships at a premium, one of most successful for the size and speed generations, whose Belem is a survivor, unlike the Duchesse Anne reflecting a generation of great vessels school that bygone period.
At its inception this veil was little different from the square sails, his yard is horizontal, but with significantly improved performance upwind, including "topping lift" of yard, that is to say, the yard becomes more vertical in approaching the axis of mast.
This sails had its heyday In river navigation: easy to implement, it was adapted to folding or removable masts various vessels such as barges, barges, and some barges. Among the boats that brought this rig to perfection, we have the Thames barges which some copies still sailing today at the marina, while others lie dormant in a museum.
To avoid when the wind increases, it moves the center of gravity towards the rear, moving crew, use of ballast, for example, depending on the size of boat. It also guides the back and center of buoyancy sailing (or tilt mast rake). Depending on the time and place, the shape of sails vary significantly. The theoretical shape with the best performance in attached flow is a half vertical ellipse whose base touches the surface of water.
That's why sailors always changing their settings to keep them as close as possible the separation sails without the to stall. This requires constant attention, because the setting must be adapted to changes in speed, heading, and wind changes. Strands of wool or ribbons (favors) are often set in various parts of hollow sails to materialize flow nets wind, and report the stall.
To improve the performance sailboats, speedboats architects also influence the shape of mast (wing masts) to further improve these flows. Resembling the close, sailing has a propulsive force as its angle relative to apparent wind is still large enough (about twenty degrees). This has the consequence that it is possible with a vehicle with a low resistance to progress, to go faster than the true wind. This is the case for example windsurfers, multihulls, mono hulls designed some of Planing and tanks to sails. Craft being the fastest sailing ice tanks capable of reaching four to five times the speed of wind.
The compilation and publication in mid-nineteenth century by American captain Matthew Fontaine Maury of wind charts (sum of statistics from the prevailing winds by sectors) on charts has identified roads where the downwind (trade winds, winds commercial) were the most consistent and powerful as these rigs are effective. He contributed to development of so-called large "square-rigged" sailing (for the general appearance they had recalling the silhouette of a lighthouse).
It was during the first half of twentieth century disappears little by little the veil, especially with the end of tall ships at a premium, one of most successful for the size and speed generations, whose Belem is a survivor, unlike the Duchesse Anne reflecting a generation of great vessels school that bygone period.
At its inception this veil was little different from the square sails, his yard is horizontal, but with significantly improved performance upwind, including "topping lift" of yard, that is to say, the yard becomes more vertical in approaching the axis of mast.
This sails had its heyday In river navigation: easy to implement, it was adapted to folding or removable masts various vessels such as barges, barges, and some barges. Among the boats that brought this rig to perfection, we have the Thames barges which some copies still sailing today at the marina, while others lie dormant in a museum.
To avoid when the wind increases, it moves the center of gravity towards the rear, moving crew, use of ballast, for example, depending on the size of boat. It also guides the back and center of buoyancy sailing (or tilt mast rake). Depending on the time and place, the shape of sails vary significantly. The theoretical shape with the best performance in attached flow is a half vertical ellipse whose base touches the surface of water.
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