A sail is a tensile structuremade from fabric or other membrane materialsthat uses wind. Other types of foreandaft sails are the gaff rig and the bermuda rig. It runs in a foreandaft direction dating back to roman navigation, the lateen became the favorite sail of the age of discovery. For these reasons alone, its inven tion was an important event. Sailcom, a tool dedicated to salesmen for sail and rig measurements and project presentation. This has historically been the standard rig for those graceful nile feluccas and arab dhows. This was mainly because it allowed a boat to tack against the wind. The ancient square sail permitted sailing only before the wind.
The roach on a square sail design is the arc of a circle above a straight line from clew to clew at the foot of a square sail, which allows the foot of the. Tell a friend about us, add a link to this page, or visit the webmasters page for free fun content. Allegedly, the lateen sail design made it possible to sail closer into the wind. Foreandaft sail, one of the two basic types of sailing rig, the other being the square sail. I think the top picture of the boat without a jib is exactly what i want. Lateen sail, triangular sail that was of decisive importance to medieval navigation. All of our jib sails are completely white unless you request a custom sail at additional cost.
A lateen from french latine, meaning latin or latinrig is a triangular sail set on a long yard mounted at an angle on the mast. The uptodate 3d design software allows getting a very high. Auckland, including designing the worlds first wind tunnel with. Finally, and most importantly, the programming team at sail science australia have, since 1983, worked very closely with existing.
This win95 platform sailmaking design software provides us with logical and consistent design. The design is a shallow draft, situpon hull carrying a lateen sail mounted to an. I must admit i havent come across that particular rig before, but it is obviously a compromise between windward and downwind performance. The advantages of the lateen sail are that it offers less drag, can be used effectively in lighter winds, and allows a vessel to sail much closer to the wind than a simple square sail. It allows you to design and visualise your own sail and compute the accurate development of all panels in flat sheets. Enjoy the fun and serenity that is sailing now with your paddle board. That is, less than 45 degrees from the direction the wind is blowing. The foreandaft sail, now usually triangular, is set completely aft of a mast or stay, parallel to the ships keel, and takes the wind on either side. Turn heads and make new friends with this unique new paddle board power source. We believe it is the easiest to use and most productive sail design software available and integrates flawlessly with our automation process.
However in this case, it is a triangular sail hung from a very long spar on a short mast. Combining ease of use with the speed of the macintosh based computers, sailmaker has brought within reach of every sail loft, the opportunity to benefit from computer aided design and manufacturing techniques without the need for a large capital investment. Lateen definition is being or relating to a rig used especially on the north coast of africa and characterized by a triangular sail extended by a long spar slung to a low mast. Sailpackaravanti, an advanced fsi simulation software. Computer molding is a direct approach to shaping 3 dimensional. Sailing boats have continued to use sails to this day for recreational sports and hobbies. There are multiple tradeoffs in these types of sails, but historically many sailing ships with multiple sails have had a combination of both. Ships and boats of all sizes have harnessed the power of wind for centuries. Sails may be made from a combination of woven materialsincluding canvas or polyester cloth, laminated membranes or bonded filamentsusually in a three or foursided shape. Computer molding is a direct approach to shaping 3dimensional sails. Sunfish are pretty rare in the uk, so the option of copying an existing sail isnt available and the cost of importing one new from the usa is prohibitive so ive decided to make. Sailcut cad is a sail design and plotting software which allows you to design and visualise your own sail and compute the accurate development of all panels in flat sheets. It is possible to use the catalan type rig, with the lateen sail only which is changed from one side of the mast to the other when tacking.
It is flexible enough in its design to follow the constant demand and evolution of the sail making industry. Discussion in sailboats started by flathead65, apr 5, 2016. We have complete control over sail shape, seam locations and concise finishing details and the software then mathematically computes the resulting panel shapes for the sail we describe. The luff could be attached to the yard at a 4550 degree angle, the leech could become the foot and the foot the leech.
A cotton lateen sail like the old morris and old town sails might have triangular corner patches as small as 35. It is a little better sailing to windward compared to a lom, and almost as good as a lug sail off the wind. Combined with the square sail, it produced the oceanconquering fullrigged ship. What are the respective advantages and disadvantages of. The lateen sail is a good small boat sail because it is selfvanging. The ocean going ones ones i remember from a year in bahrein in the sixties had such large spars that there was no chance of them lowering them moving the spar and sail, and rehoisting them. The marconi rig on the laser is a far more efficient airfoil than the sunfish rig of about the same sail area. The vikings optimized the performance of the square sail, and the dutch modified the arab lateen to.
A wind tunnel investigation of the aerodynamics of sailing dhows. Sailpack is an innovative sail design software that is both more productive and more accurate than any other software on the market. As the pioneer of modern computer assisted design cad for sailmaking, north sails developed the north design suite nds, the most powerful and diverse sail design tools in the industry. This shade sail design software can be used on 3,4,5, and 6 sided sails. The flying lateen a revolutionary new sailboat rig for architects, builders, riggers or owners designing new boats or retrofitting older boats. Best of your three choices for speed and windward ability. Sail design software free download sail design top 4. We have several color options for mainsails that are listed below. Nautical denoting a rig with a triangular sail lateen sail bent to a yard hoisted to the head of a low mast, used esp in the mediterranean. The sail must have been less efficient, but it still went to windward. The drawings here give the dimensions of many small sails with the center of effort shown, to aid placing the sail on a boat properly. Its raked mast evokes visions of speed, adventure, romance and the grace and beauty that such ships bring to mind. Does that mean that nobody is reading posts on this forum or have. I looked at the genoa in the illustration of the boat and thought i could use it as a lateen sail.
Im currently see separate thread building a bateau moonfish 14, a sunfish clone which can accept the sunfish rig and foils. A family of 14 specialized software modules, nds delivers unprecedented power. The lateen is another with its sail hung, fore and aft, from a yard. The program formed a comprehensive tourist offer based on a. The mainsail always has a boom, pivoted on the mast. I have ignored roach in the drawings for the sake of simplicity, it makes very little difference in the coe. Howto rig lateen sails, kayrak sailing kayak with lateen rig.
Sailmaker sail design and production software from sail. Tension on the downhaul prevents the end of the boom rising as the sheets are eased off the wind without the addition of extra hardware such as a boom vang. The vessel in the picture at your link has lateen sails. A lateen from french latine, meaning latin or latinrig is a triangular sail set on a long yard mounted at an angle on the mast, and running in a foreandaft direction dating back to roman navigation, the lateen became the favorite sail of the age of discovery, mainly because it allows a boat to tack against the wind. A better match of ancient tradition and modern technology would be hard to find. Campbells the lateen sail in world history a square sail catches a following wind and is dragged along by it. Most of the current texts on the subject were written back when 36 wide dacron usually used fullwidth was the norm for fabric. Much of what i know about practical sail design came from his book. Whats the purpose of those forward raked lateen sails you. Historically, it represented an important advance over the ancient square sail. Prosail headsailmainsail our sail design software is used by 270 lofts worldwide. Other traditional rigs which achieve the same effect are the spritboomed legomutton and the balanced lug. Specify the sails overall dimensions, luff, foot, leech etc. Cotton sail corner patches could be made smaller because they work together better, stretch a bit and share the loads more as a group.
It is common in the mediterranean, the upper nile river, and. Our sail design software is used by 270 lofts worldwide. Which i do regret, because i would very much like to know the answer. The most widely used publically available sail design software package. Sailpack, the most efficient sail design and production solution. Turn any paddleboard into the hottest thing on the water. Lateen sails article about lateen sails by the free. Mast extends to 12 feet high and with a large 40 sq ft sail enjoy free, unlimited green energy now. It is common in the mediterranean and the northwestern parts of the.
For a duck, this type sail has some of the best overall performance qualities. A lateen sail is a type of foreandaft sail, whose default alignment is along the length of the ship. Create hardchined hull by moving points with basic hydrostatic calculations. The original sailcut was a basic program developed by robert laine in 1978. Im nearing completion of the hull and am now turning my planning attention to the rig. The guy who put them up wrote a very interesting book on small boat rig design, and his illustrations are excellent. The lateen sail proved to have better upwind performance for smaller vessels. The lateen mainsail stands always on the same side of the mast. Mpanel shade designer software allows a user to design a shade structure using an easy wizard interface.
The flying lateen has resurrected the old lateen sail by simply getting the mast out of the way. The triangular sail was affixed to a long yard or crossbar, mounted at its middle to the top of the mast and angled to extend aft far above the mast and forward down nearly to the deck. It is an unusual sail for a lateen though, with the spar nearly vertical. Sailcut cad is a sail design and plotting software. Lateen rigging, square rigging, mediterranean seafaring, sailing performance, technological change. Instead of cutting the sail at the mastline creating the split rig, the mast itself has, in effect, been cut in half and spread apart allowing the lateen to fly freely between its legs. It is possible to use the catalan type rig, with the lateen sail only which is. This is ken abrahams boat, here are the sail dimensions. Originally found on sailing ships, the lateen is used today in a slightly different form on small boats like the highly popular sunfish. We also take orders for custom sails for an additional cost. A sail is a tensile structuremade from fabric or other membrane materialsthat uses wind power to propel sailing craft, including sailing ships, sailboats, windsurfers, ice boats, and even sailpowered land vehicles. The original sail cut was a basic program developped by robert laine in 1978. The sunfish class of onedesign sailboats is lateenrigged.
How to design a shade sail using mpanel shade designer. Lateen simple english wikipedia, the free encyclopedia. Initially he was able to sail only downwind, but the cretans and phoenicians made design improvements to sails that permitted sailing across and eventually against the wind. In a word, it is designed to enhance the simple beauty of sailing. Keep in mind that the total amount of broadseaming added to the sail stays pretty much the same when you change to different panel widths and more seams. Simply import a photo of your sail taken from the foot of the sail looking up, draw on the camber lines and the software will tell you detailed information about your sail flying shape including depth, draft position, twist etc. Sailpack vision software from bsg is a free sail shape analysis tool. Why did sails go from square in the ancient era to mostly. If you order a sail by itself, it does not come with any additional hardware.
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