The other challenge is that the junk rig is relatively heavy for its sail area, therefore stability must be adequate to carry the rig. While relatively uncommon in use among modern production sailboats, the rigs potential advantages of easier use and lower cost for bluewater. Below is listed what our own design office supplies in this regard. Jan 30, 2016 i may have found what ive been looking for in my last post i mentioned that i havent found any production boats in the max 3637 ft range that would fit my requirements. A 28 junk rigged yawl design this is the junk rig that i dream about. Given proper design, there is no reason the junk rig cannot be adapted to performance oriented cruising boats.
G blondie hasler developed a simplified and modernized version of the traditional junk rig and used in on jester a boat that was to prove the worth of haslers junk rig designs. Usually, the modifications of a stayed rig boat to a freestanding rig are too expensive and problematic for most owners, but bryan and cary were committed. My decision to buy a chinese junk rigged schooner was shaped by several factors. It is varied in detail to suit all boat sizes from 9 inflatables to. The junk rig association boat design and designers. This fixed, nonrotating mast design used the woodepoxy technique for an oval section which bryan and cary built in carbon fiber prepreg composites on a theater stage in vancouver. Amiina has edwards latest version of the split junk rig, and emmelene is using his previous version. Foremost was the certainty that i would be voyaging and not racing. The junk rig, is definitely not the most efficient sail plan for racing or cruising to windward. If you know of any boat missing from this list, please let alan, or the webmatser, or both know so that we can keep this list up to date. The woodenboat forum is sponsored by woodenboat publications, publisher of woodenboat magazine. A family of 14 specialized software modules, nds delivers unprecedented power and flexibility to sail design and righull analysis. Yacht rigging part 1 design particulars all at sea. Whatever the size of your project, boswell yacht design can help you take your project all the way from initial concept ideas to production and build drawings.
Rig design database our database of boats which have been rigged or converted to junk rig, compiled by georg warnecke and updated by alan boswell, can be found here. There you will find a wealth of information and becoming a member is well worth it. Marples designed 3meter trimaran gets a junk rig small. Boat design net does not necessarily endorse nor share the view of each individual post. Jan 01, 2003 voyager explains junk rig choice jan 1, 2003. I started this website to help promote, educate and bring together people interested the junk rig. Over 50 years ago i designed a boat with tsquare, triangles, and tiny wooden battens student at georgia tech. I still havent, but i did however find a design that fits them quite well and its only 10 meters 32 ft 10 in.
The software is a proven, engineering designanalysis program that presents predictive performance results in easyto. I live on a 1967 grand banks tricabin, so im limited to about 10. So, before you start to design the sail you need to check your boat for a suitable position mast, then design the sail plan to suit. The junk rig was designed by barry, with aesthetic design by meps. 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. To build a boat from scratch you need a set of suitable boat plans including full size patterns for the frames, deck beams and stem.
I would like recommendations for good free boat design software. For the unitiated, the junk rig was historically the predominant style of sail in china and many other parts of asia. I first had a dream of building a junk rigged sailboat almost twenty years ago. Here is a video of a junk rigged compac 19 with a cambered panel sail. An analysis of the sailing efficiency of the junk yacht. Because of the nature of the rig a junk sail works best on an unstayed mast. Yacht and marine design services from ideas to reality home sailing yachts classic yachts thendara motor yachts small projects revenue cutter junk rigs pedal power 3d design contact us. So, inspired by the sailing canoe ships of the ancient pacific, we designed and built a 63ft. She has since proven to be his most successful design, with over 700 sisterships launched to date. Junk rigs uk, australia and europe lug rigs usa and canada. I found this picture in a small frame in an obscure office while in town in grenada while i was building a house there. 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 played around with free airfoil evaluation software exploring this. Junk rig sail design the woodenboat forum is sponsored by woodenboat publications, publisher of woodenboat magazine.
Designing and building a junk rig adventures with meps n. Design and build your own junk rig is a stemtostern guide for the western sailor who wants to junk rig any hull. My decision to buy a chinese junkrigged schooner was shaped by several factors. The trial version of this software is also available for download.
But i thought it was only fair to warn him that such a choice could carry heavy costs in other areas, such as. Nov 04, 2018 after a long search, we bought the plans of the tiki46 n2 after a visit to the builders of the tiki46 n1 in uk. The junk rig or chinese lug rig is easy to handle, very easy to reef, easy and inexpensive to build, easy to rig, has no complex hardware, requires no winches, is easy to maintain, involves very low rigging stresses, provides a low center of effort so requires less beam or depth of keel, and at least in my view. It was repopularized to use the term loosely in the 1960s by blondie hasler on his singlehanded transatlantic yacht jester. Junk rigs boat building plans kits sailboats steel aluminum.
The software is a proven, engineering design analysis program that presents predictive performance results in easytoread, comparativestyle and graphic format. Junk rigs bruce roberts boat building boat plans boat designs custom boat plans kits. Discussion in sailboats started by mikthestik, may 14, 2016. Software design and navigation open source, freeware, and shareware. The junk rig cached the boat design and boat building. While relatively uncommon in use among modern production sailboats, the rig s potential advantages of easier use and lower cost for bluewater. 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. The junk rig is a wonderful cruising rig because it is simple. This makes the junk rig very forgiving for family sailing. Glass came out, but they killed that program and we never took it any further. The rig was impressive, and when mo and i decided on a new yacht we chose a fay 40 with a junk schooner rig to become our travelling home.
Alan boswell of boswell yachtdesign, the designer behind sunbird yachts and sunbird marine services and latterly head of design for oyster marine is. For several years, we motored on the intracoastal waterway for three or four weeks at a time to spend winters in florida. My name is jim creighton, a member of the junk rig association. Nested 3d drawings required to depict typical chinese lugrig junk. The design of soft wing sails for cruising boat design net. Nested 3d drawings required to depict typical chinese lugrig junkrig design. The junk rig, also known as the chinese lugsail or sampan rig, is a type of sail rig in which rigid members, called battens, span the full width of the sail and extend the sail forward of the mast. A junk rig arrangement that i favor is that of my jasmine 48 design, where both sails are equal and can therefore exchange parts as needed, and no western sails are present. Mcgrahan, former instructor of latin, set in his opinions as only a british gentleman can be, after years of careful thought and study, gave me a set of offsets he had worked up and asked me to design his boat from them. So we sized the boat to fit the job, then we needed sails that one person could manage.
Words and drawings clearly explain in detail concepts that have been successfully used for millenia in the orient. Reading up, there are a number of choices, and then once a particular design is selected, there are more choices, including sailcloth, batten material and method of attachment, and specifics of overall rigging. I plan to do this, adding a mizzen when i do my junk rig conversion, rather than resorting to the unsightly conglomeration that is a hydrovane steering system. Software makes it easy to predict the effect of any individual or group of design changes on the ultimate performance of the hull. Yacht designer tad roberts offers a wide range of yacht design and consulting services from new design of power, sail, and small boats to oversight of refits and restoration, to consulting on transport canada and iso regulations and standards for vessels to 150. This is where the sailor with a keen eye can notice deficiencies in both yacht and rig design. Since we arrived in vero beach at christmas, my job has been to design some sails to put on her. If youre on the lookout for a certain tool or software which helps to design part of a boat, then the boat design software is the right choice to make. Add to this type of hull a simple box ballast keel filled with scrap iron and cement and you have a very seaworthy, inexpensive and quickly built design. Choosing a chinese junk rig snowbird from bavaria medium.
Making separate panels was my original intention as i had read an article in one of the junk rig association magazines somewhere about the possibility that the junk sail used turbulent rather than laminar flow to gain lift. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. The 28 fantail china cat modern classic yacht design. Theres probably no rig more fascinating than the junk rig. It would be interesting to race a junk rigged boat and a more conventionally rigged one with the same hull design, around the cans with just one.
I downloaded the free version of delftship, but have not installed it yet. I may have found what ive been looking for avoid rocks. There are many who feel that this very old but very innovative sail plan is superior to the sloop rig. They organise events to take people out on trial sailing junk rigs. We then joined the junk rig association and went on some of the rallies, which gave us the opportunity to sail on a number of junk rigged yachts.
Bruce roberts, boat plans, boat building, boatbuilding. The junk rig or chinese lug rig is easy to handle, very easy to reef, easy and inexpensive to build, easy to rig, has no complex hardware, requires no winches, is easy to maintain, involves very low rigging stresses, provides a low center of effort so requires less beam or depth of keel, and at least in my view, looks great. With the advent of modern computer yacht design we have been able to offer the complete boat plans on download or on usb memory stick. Alan boswell has designed over 250 junk rig conversions for individual owners. The junk rig association other websites of junk interest. Separate panels, would allow air to flow through and around the batons thus creating turbulence.
Boat design and designers the junk rig association. For the last four years ive been planning to build a junk rig for flutterbyeven before we had looked at her as a possible boat to buy. The junk rig, also known as the chinese lugsail or sampan rig, is a type of sail rig in which rigid members, called battens, span the full width of the sail and. The chinese sailing rig design and build your own junk rig. Long before columbus time, early as the 10 th century, the chinese were making their way through the oceans with a rig that has amazingly stood the test of the time. This rig is noted for its easy handling, low cost, and low maintenance. Certain design elements are lost in translation when in the hands of a usually costconscious builder. The most common rig fitted is the colvin designed junk rig. Voyager explains junk rig choice ocean navigator january. A mixture of the reddish and fenix rigs for inshore and offshore yachts.
One of the biggest challenges in doing a junk rig conversion, for me, was the very beginning. Please use the name of the item in the topic, and precede the title with for sale or wanted. Tystie has had a singlemasted junk rig for half of her sailing, 40000 miles. The unique color scheme was inspired by our first daysailer, a 1967 starcraft. Having multiple battens, the sails can be made of somewhat lighter material. For more details of the junk rig, visit the junk rig association at. An excellent combination is also the use of a fairly traditional hull form with the junk rig. There is even a short youtube sailing video featuring the boat doing its thing on the water at the very end of this post. For many years alan has specialised in the provision of unusual rig designs, such as junk rigs and wing sail rigs, for over 200 customers carrying out conversions. The second important consideration was the rig s simplicity. As with any rig, there must be correct balance, and sufficient sail area, with an efficient plan form given to the sails. And with most junk rig conversions the mast will need to be positioned forward of the bermudan mast position. The boat may be a sailboat or a motor boat with hard or soft bilge.
It comes with several features which help in designing yacht lines, ship lines, hulls and other interior parts of a boat or ship. Tammy norie has her original flat haslermcleod rig from 1983, and so this was a rare opportunity to compare rigs on two boats of the same hull. The second important consideration was the rigs simplicity. Sailboat and sailing yacht searchable database with more than 8,000 sailboats from around the world including sailboat photos and drawings. The junk rig the junk rig shares many of the virtues of the gaff rig. Designing and building a junk rig adventures with meps. I contacted and visited sunbird marine to decide which type of junk rig will be the best for our tiki46 and finally i ordered the sail plan of an advanced junk rig with wishbones and double sails. Rm30 refers to the amount of force exerted on a hull heeled thirty degrees, generally considered the most that it will undergo in normal circumstances. The chinese sailing rig design and build your own junk. After sailing on a bermuda rigged boat, and watching a big gaff rig go up, we got on a junk rigged boat and saw for ourselves how incredibly easy these sails are to raise, lower and especially reef.
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