Gaff rig sail design software

That said, gaff rigs are pretty cool and they were highly evolved before they were replaced by more modern rigs. Building ganymede as a gaff rigged pilot cutterzartman. For some gaffer owners there are few greater pleasures than surprising the crew of a boat with a bermudan rig. Sailcut is a software for designing boat sails and developing then into flat panels. My experience has been mainly with gunter rigs and gaff rigs but i also used to sail on a cornish dipping lugger. To my surprise, paul thoroughly approved of the idea he designs only gaff ketches. They were almost always baggy and didn t set all that well when sailing to windward anyway. Upon hearing of my plans, a friend in antigua gave me the excellent book. We believe it is the easiest to use and most productive sail design software available and integrates flawlessly with our automation process.

In fact, in its ideal form the shortgaffsail is fairly close in profile to the shape of the fully battened elliptical plan form racing sails of today. To aid sail design, img2des has been created to measure a flying sail shape from any digital picture or image of a sail. Design modules azurelite and azuredesign allow sail designers to work methodically through the various steps of rig modelling, sail mould shape design, panel layouts, corner patches and sail details. However, it can be fitted with a tripping line from the throat which allows the gaff to be dipped. Schuyts engaged in eel fishing were said to have begun visiting london in the reign of queen elizabeth i and were granted the use of a berth there. You can export the sails you create to dxf, plaintext or carlson plotter files. When we discovered that we could not use commercially available software to design gaff rigged sails, we developed our own gaff rig sailmaking software, and are now exclusively able to offer all the. Compared with the sliding gunter rigs of the traditional german racing dinghy classes, the design parameters are quite challenging. Design 73 is a really versatile sailing and rowing dinghy and is one of the most popular of our designs. The sail is forgiving in gusts and when one lowers the gaff, a hell of a lot of sail can come down quickly. The azureproject fiber layout tool is used by fibermembrane manufacturers. Everything is done to look as old as possible, although we build in a modern way for economy when appropriate. This is the internationally regarded definitive handbook for anyone designing, building, rigging or sailing gaff rigged craft.

The junk rig association stayed mast imagesdesigns. In the foreandaft gaff rig the yard is swung to one side having one end resting against the mast. Of course no reference to exotic sail plans of the carbon composite era. Voyager drops gaff rig for freestanding junk ocean. The gaff rig was also easier for me to make at home, out of an aluminum light pole, some bar stock and a. Oct, 2012 i am going to design and make a lug sail, based on the goat island skiff sail measurements using sailcut. Still, the gaff rig finds favor with those who love traditional craft andreplicas of the working sail of yesteryear. The word yawl was first recorded in the 1600s and derives from the dutch jol. With light to moderate winds, the mast and gaff will remain relatively straight, and in stronger winds the bend will flatten the sail, which is good. Sailmaker le is a version of sailmaker that allows you to design and manufacture sails from a set of standard moulds supplied by sail science australia. Sailboat, multihull, powerboat, and yacht manufacturers and custom builders.

Sailmaker sail design and production software from sail. Panels and patches are saved in all file formats used in the industry. The study never left the drawing board, except the gaff rig which was a success. Directory of yacht designers and naval architects, gallery of design work, and active boat design and boat building discussion forums. The leeboards and rudder would be raised by an arrangement of blocks and tackles. This best proportion is not always followed, of course, but in leathers ideal gaff main sail, the angle of the gaff to the mast should be at 30 degrees, and the boom should rake. With either rig there is no need for track, so the sail will never bind or give any trouble. Sail design with sailpack is basically a three layer process. Create a full rig model for all yachts with multiple masts. Sailcut uses a unique mathematical definition of the surface of the sail which ensure that the sail profile is smooth and aerodynamic. 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.

All frames have straight contours using standard materials, and. More impressively, these tools can set up the rig geometry to see how the sail mold will actually look on the rig. Gaff rigged schooners are an entirely different animal from any modern day rig. Sailpack is the typical tool doyle sails designers use for daily sail design. The lug sail lies somewhere between the square sail and the gaff rig. I am wondering about the need to have gaff or luff round in the sail. Unrestricted number of shaping chords, elliptical or aerofoil. The boat is a gaff version schooner irene, a design created for scratch building. 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. It also includes a viewer where you can assembled a hull, a rig and a set of sails to see how they match. Gaff rig is a sailing rig configuration of sails, mast and stays in which the sail is fourcornered, foreandaft rigged, controlled at its peak and, usually, its. This is an opportunity to own a very fine, like new but truly classic cruising cat. Gaff sails built in traditional fashion hand roped and with rope woven cringles.

We can still use the cheapness and effectiveness of this rig to create boats with very quick and pleasant sailing characteristic. Multirig allows creating a full rig model for all yachts with multiple masts. Recently we have built sails for ripple, a cornish lugger rebuilt in a very original fashion, and so were the sails. Feb 22, 2020 plans for gaff rigged sailboats for amateur or professional boatbuilders. The design team at harding sails is equipped with the latest in sailmaking cadcam technology.

The sail itself is best proportioned with the following ratios. However unlike a square sail the halyard which raises the yard is not attached at the center but nearer to the forward end. Often, on the smaller, non tall ship, gaff rigs, there will be a small triangular sail that fits between the main and the mast like a puzzle piece this is the topsail. The design team at harding sails is equipped with the latest in sailmaking. The shortgaff rig was developed and was well proven on vessels such as the dutch sloops. The jib is also vital for creek sailing, canal or broads sailing where narrow, winding waterways demand decisive going about.

To the best of our knowledge, nearly 40 of these boats have been built to date. The gaff rig had substantially larger sail area than the bermuda rig it replaced, yet halloween could not keep up with on a boat for boat basis with the boats she had previously bested easily. Sails can be either 4 sided sails like for old timer gaff rig or 3. Lacing a gaffrigged sail to your mast classic boat magazine. Whatever your ambitions, its always worth talking to people who sail something similar. Virtues of a cutter rig, by lin and larry pardey off. The hull is built on four simple temporary moulds, set up on a jig base. Gaff or generalized amber force field, a set of parameters used. The 23 fantail cutter sarahcat kasten marine design. Sail design i neeed to educate myself on sails as my sailing dinghy needs a new sail. See more ideas about sailboat plans, sailboat and boat. As hardware and boat design has evolved, so has the conventional wisdom.

Ive been fortunate to have been commissioned to design a wide range of gaff rigged yachts, from 25foot catboats and bahama sloops to 70foot schooners. We have seen the change from the balance lug being almost forgotten to becoming the predominant rig for small self built wooden boat. The sail hangs fore and aft with the forward lower corner of the sail held, the lower aft corner attached to the controlling sheet. Dec 29, 2008 as a gaff rig i dont think the closeness of the main to mizzen is an issue as you get a nice bit of twist in the sail, unlike a bermidian rig. It enables sail designers to work methodically through the various steps of rig. Sailpack sail design software sailpack sail design software. A yawl is a two masted sailing craft whose mizzen, or aft most mast, is usually substantially shorter than the mainmast and is positioned aft of the rudderstock. This best proportion is not always followed, of course, but in leathers ideal gaff main sail, the angle of the gaff to the mast should be at 30 degrees, and the boom should rake upwards about 6 degrees allowances must be made here for the height of the gooseneck, deckhouses, etc. Thanks to global warming, it was a pleasant 77 degrees f in the cockpit as we piloted a marshall cat 22 around the harbor in 8 to 10 knots of wind.

Kamm rig high speed sail kamm rig high speed sail sail has the ideal gliderlike form of a long narrow rectangle, held between boom and sheeted gaff. They carry immense amounts of sail area close to the water to avoid excessive heeling. Currently it is running a 60 square foot sprit sail, which is old and nearing. First of all, however closehaul you can get with your now setup, throw that out the window.

I believe you can make your own by using the dimentions and adding a small amount for a proper camber. With sailpack the designer can input the existing detailed sail plan to visualize and. Sails can be either 4 sided sails like for old timer gaff rig or 3 sided sails like jibs or main sails for marconi rig. Sailmaker le access to a world class sail design database. She is a small cutter of traditional model, fullkeeled and in her proportions, fairly narrow and deep. The jra junk rig association, formed in 1980, aims to further the development of the junk rig and to create an international community of people interested in such rigs to share experience and ideas. Sailing a tom colvin gaff rigged schooner rigging doctor.

Hout bay 50 steel schooners dudley dix yacht design. In frustration she was sold several times before being laid up and before being restored and receiving the yawl rig under which she eventually became. Recently, i had the good fortune to spend the better part of a sunday in january on the water under sail. Either way, it is of utmost importance that the luff lacing does not pull the sail closer to the mast than it was designed to be.

A couple of years ago i made a little study of how it would be to replace a gaff mainsail with a junk sail, but keeping the rest of the rig. Our sail design software is used by 270 lofts worldwide. With sailpack the user is able to create, a realistic simulation of any number of possible rigging configurations mast, spinnaker pole, gaff, etc. Do some background homework in the performance of a gaff rig first, this is for a reaching hull rig design, not what your hunter was designed for. The marconi rig uses stainless steel rigging and more harware. Specify the sails overall dimensions, luff, foot, leech etc. The sail was attached to the gaff and the boom by the old nickel silver sail track screwed to the wood, and old fashioned metal sail slides. Special design modules for gaff and multirigs are available in the addons. History, design, techniques, developments kindle edition by leather, john. The short gaff long luff sail is not my invention by any means. I started on this design a few years ago but my client passed on before the design had progressed beyond lines and basic layout drawings. Smar azure works closely with sail, rig and yacht sailmotor designers to provide designsoftware solutions that improve quality standards, manufacturing processes and customers satisfaction. The electronic model can then be viewed from any perspective and tweaked for optimal performance before actually going into production.

Gaff rig is a sailing rig configuration of sails, mast and stays in which the sail is fourcornered, foreandaft rigged, controlled at its peak and, usually, its entire head by a spar pole called the gaff. Sail characteristics derive, in part, from the design, construction and the attributes of the fibers, which are woven together to make the sail cloth. In addition to the main theme gaff it covers all sail plans for classic and modern sailing yachts and schooners. Gaff rig safety ease of use for a cruiser boat design net. A gaff rig has different challenges in design than a fractional sloop. Scow 33 junk rigged version there is also a traditional gaff rigged version. Gaff rig, a foreandaft sailing arrangement in which the sail is held up by a spar called a gaff. The rigging is more complicated and has more potential failure points. Gaff rigs provide plenty of strings to pull and offer more than enough scope for inveterate tweakers. Kamm rig high speed sail cached the boat design and boat. The sail remains simply supported by the yard, now called the gaff.

It is flexible enough in its design to follow the constant demand and evolution of the sail making industry. It provides a fascinating insight into the design, history, techniques and developments of a rig which has evolved through the centuries. I cant recall the terminology, but the lugger has a running backstay which isnt really a backstay, its the aft shroud on each side, which is loosened or tightened on each tack so only the windward shroud is under tension and the leeward shroud is loose so it. The sail area is considerably larger, the uprighting moments and forces of a keel boat with a bulb keel about 400kg and the sliding gunter is of an. In the west, lug rigs traditionally mount the sail on the port side, which probably accounts for the rule for giving way to boats on starboard tack. In the 1930s, the new bermudan sail, with its single halyard, no gaff and no topsail, seemed to the yachtsman of the day, particularly weekend yachtsmen, who did weekend club racing, a definite step forward in an easily handled sail rig, and it did sail closer to the wind by about 5 than well trimmed yacht gaff sails. Ease of singlehandingthe catboats were initially designed for fishing familiesjust a man and. Sailpack rig mode left and onwater testing of new sail designs right.

The software is very capable, allowing designers to create the sail profile, curvature, panel layouts and fibre layouts for each project. The sails are spread out foreaft instead of updown. A typical traditional dutch barge would have gaff rig, a bluff bow and stern, a pair of leeboards and a large rudder. The mast is short because the gaff rig we designed carries its sail area low, while still spreading 30 square feet more than the jibheaded cape georges with masts twelve feet taller. I am not sure that there is conventional wisdom on that topic as the answer seems to be evolving. I therefore decided to definitely go ahead and change the rig. Ive downloaded several boat plans that include sail plans, but they all seem to assume that you already know a great deal about sailing, sails. Historically the term was also used for a ships boat with oars. Thats an image from workshop, software for defining a vessels structure in preparation for nc cutting. Galvanised rigging is used for the gaff rig versions, further reducing costs.

Bruce roberts 55 1983 sea dream sailboat for sale video walkthrough by. Sailpack sail design software sailpackreflects the true position of deck fittings and rigging, including tracks, blocks, chain plates, and spreaders. Special design modules for gaff and multi rigs are available in the addons. Gaff crossdressing, an item worn as means of concealing male genitalia. The software is very capable, allowing designers to create the sail profile. When we discovered that we could not use commercially available software to design gaffrigged sails, we developed our own gaffrig sailmaking software, and are now exclusively able to offer all the benefits of computer aided design to customers with these traditional rigs.

The cape charles 32 is a great concept for cruising chesapeake bay, the bahamas, caribbean and similar areas that have sailing waters and anchorages with limited depth. The predecessor of gaff rig, the square rig, was a crude fabric sail simply hung from a horizontal yard. The british saying gentlemen never sail to windward was coined by gaff rig sailors. A gaff rig employs a spar on the top of the sail and typically other sails can be set in conjunction with that mainsail with the gaff. Schuyts engaged in eel fishing were said to have begun visiting london in the reign of queen elizabeth i and were granted the use of a berth there, which continued in use until the. Email this page to a friendour favorite sailing rig. I once drew a gaff rig conversion for my catalina 30.

The harding sails design department also benefits from inhouse software development, addressing design issues in a uniquely custom fashion. Pattern for gaff sails the woodenboat forum is sponsored by woodenboat publications, publisher of woodenboat magazine. With the gaff rig addon, gaff sails can be added to any mast. Operation gaff, 1944 military mission of assassination. Gaff sails is the unique design program for designing low and high aspect ratio.

Lacing advice for those of you who own gaff or gunter rigged boats. Sailcut cad sail design and plotting software linuxlinks. The forum is a free service, and much like the free content on public radio, we hope you will support woodenboat by subscribing to this fabulous magazine. I have learned the rig and all details for the rigging. F or any sailing boat under 45 feet, nothing beats a properlydesigned cutter rig, especially if you sail shorthanded. There are other marconi rigged boats if gaff rigged just isnt your style.

Our software allows us to create a virtual sail in the computer. Sail design software sailpack is an innovative sail design software that is both more productive and more accurate than any other software on the market. By properly designed i mean, having a staysail that is large enough to be used as the only headsail in winds above 20 knots. Chord, contour, net, surface, rendered and panel lines for viewing. An alternate possibility would be the chinese lug rig which would be easier yet to handle. Surprise is one we built for our own use in spare time over a period of five years. There are several key factors in evaluating a fiber for suitability in weaving a sail cloth. Sharpie 36 san juan islands there are several additional versions of this design, both larger and smaller the schooner ibis is based on this design.

Cape charles 32 boat plans dudley dix yacht design. If youre looking for a simple and inexpensive cruising sailboat with traditional character, our fancy free should fill the bill. Use features like bookmarks, note taking and highlighting while reading the gaff rig handbook. Before anyone gets too excited by the gaff rig, be very aware of one disadvantage of the design relative to a bermuda rig. We believe it is the easiest to use and most productive sail design software available and integrates. 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. Because of the size and shape of the sail, a gaff rig will have running backstays rather than permanent backstays the gaff enables a fore and aft sail to be four sided, rather than. When setting the mast lacing it is crucial to establish whether you have a straight luff or a throat andor tack knock. It is very userfriendly and allows user to control the.

Sails can be either 4 sided sails like for old timer gaff rig or 3 sided sails like jibs or. The junk rig association deciding on sail area of junk sail. This design provides the timeless appeal and value of a traditional yacht combined with the space benefits of a modern interior and. The ply epoxy lapstrake construction is very straightforward to build and produces a strong, stable and lightweight boat. The first version of sailcut was developed in 1978 and used by robert laine for making the sails of his ior 14 ton named flying sheep iii. The author is an expert in the subject of the text and takes the reader through the evolution, demise and rebirth of the rig over a period of more than 300 years. Download it once and read it on your kindle device, pc, phones or tablets. The sharpiedory hull with flatbottom, hardchine form is ideal for the amateur. Integrated 3d sail design,fairing, paneling and printingplotting of offsets. The making of the sliding gunter gaff was the most difficult part of the reproduction of the historic rig. Sail design is a twostep process of process of taking the 2dimensional sailplan, determining the 3dimensional shape of the sail, and then figuring out how to make that 3d shape a reality within the constraints of the materials at hand. To windward you would probably set your boom over the quarter anyway, not on the centerline. On my own lugger on the sail plan the main overlaps the mizzen, but in practice its well clear and is no problem. Gaff sails is the unique design program for designing low and high aspect ratio gaff.