The SEAWIND 1600 won SAIL Best Large Multihull 50ft and Above “With each effort, we get coser to that perfect combination and that’s why I found so much to like on the new Seawind 1600” by Zuzana Prochazka from Pacific Yachting and SAIL magazine SAIL Magazine has delivered a fantastic New Year’s present to Seawind Catamarans: The Seawind 1600 has been named the SAIL Best Boat, … At the Catamaran Club on the Isle of Sheppey in 1967, the Tornado won the ‘B’ class, and in the ‘A’ class category the British Unicorn competed, along with with several other boats, against Graham Johnston’s Australian Australis design. Leopard 46; Leopard 44; Leopard 40; Leopard 38; Robertson & Caine; Photo Gallery; Winner of Cruising World's 2012 Best Multhull of the Year, and SAIL Magazine's Best Cruising Multihull, the Leopard 44 represents Robertson and Caine's latest innovative developments with modern features not yet seen on production catamarans.. They were also made slimmer and longer, and this higher aspect ratio vastly improved the drag effects over a broader chord foil. Different catamaran models range from 10 feet (3 m) in length to 21 feet (6 m), and beams range from 6.8 feet (2.1 m) to 8.5 feet (2.6 m), mast heights range from 20 to 33 feet (10 m). Then, in the mid 1980s the ‘Fat Head’ sail appeared on the ‘A’ cat for the first time. The present Saarberg A-class carbon mast is built in 3 catagories for sailor weight. In 2013 the foils had developed from a C shape into a J shape and as a result of redesigned rudder winglets, positioning them at the bottom of the blade, the boats started leaping about like salmon. Here's an illustrated guide to one sailors project building a beautiful A-Class catamaran out of plywood. LEOPARD CATAMARANS. This provided some sail areas and centres of effort to consider. Mast & Spreaders - Basic Explaination. The reduced roach furling main is there for a more practical approach. Several years ago we developed of an optional MainTamer boom which consists of a set of light weight laminate ‘wings’ attached to the standard boom that in effect provide a platform to contain the mainsail folds so they don’t tumble about. Which configuration will arrive at the next port first is debatable. But thinking around corners is what designers and sailors like to do and before long, designs for foils emerged that complied with the top insertion, limited span restrictions and provided enough lift to get the boat clear out of the water. To symbolize the two hulls the letter "A" had a double underlign, same  as the B's,  the C's and the D's. For inquiries about the class.Charles Bueche, For race results, product news, stories etc. For over ten years, Selden spar and rigging engineering has been incorporated closely with our own production engineering, forming a kind of mutual investment structure. Fun for the family and exciting for the juniors while forgiving enough for the newly initiated, the Hobie Wave is the ideal must-go-sailing-now catamaran. For many years, the Antares was not offered with a furling main option, despite the considerable interest expressed by customers. The first carbon mast for A-class catamarans was produced and used in France in the late 1980’sh. Although all the boats measure as ‘A’ Class cats equally, the foiling/floating thing appears to irk some in a few national class associations. Many of the America’s Cup crews are also ‘A’ cat sailors. The height from the water level to the tip of the mast. At the same time the sail must flatten rather than get fuller. The mast base shape is identical to the common 145×60 mm section for the ease of interchanging parts. And, as the leeward foil curved under the boat more, it produced much more lift as the angle of attack (Rake) could be adjusted also. - Weight: < 8,0 kg for soft section, approx. The real turning point came in 2014 before the Worlds in New Zealand. Nacra & Performance Sails are based in The Netherlands. This provided access to some fresh and considered opinion from the world class sail loft. The Dart 18 was designed in 1975 as a One Design Class by Rodney March, who was also responsible for the design of the Olympic Tornado class catamaran. In dighny classes the Laser and Open Bic offers the possibility to the young sailors to race at the utmost level until they are grown up to master the Finn. Now these are sandwiched between two airtight skins. infousacat@gmail.com. Encontre (e salve!) Their ability to be altered, modified and improved will also continue to see the ‘A’ cat being used as a test vehicle for design ideas on larger boats. But, their practical handling off the water still proving troublesome. Simply put, we (and our customers) needed Selden level support for any venture into furling mainsails. Various designs for the ‘A’ bubbled away until the IYRU held trials to seek out the best designs in the ‘A’ and ‘B’ classes and to award them international status. There were two primary reasons for this; the prototypical nature of the gear on offer and the compromise to the mainsail area. Currently, the modern ‘A’ cat bears a striking resemblance to its rather higher profile cousin, the AC45 . The top insert only rule has prevented earlier, more stable, and probably easier foiling to happen if an L shaped main foil were to be fitted. The Maine Cat 30 is a simple live aboard cruiser for weekend getaways or the cruise of a lifetime. It is truly a catamaran in a class of its own, the use of space, unlike anything I have ever seen. The company always had a very close relationship with its customers and the prevailing philosophy demanded that the new boat could be handed over with confidence to its trusting owners. This lower drag high-aspect ratio rig, much like a glider wing, allowed and helped the boat to fly a hull much earlier downwind with the resultant reduction in drag. If you know which way the wind will shift, then you can make better decisions. The ‘B’ class was a 20ft twin hander with 235ft2 of sail and developed into the Tornado and a few offshoots such as the F18. Do not oversheet while doing the wildthing. While nearly every catamaran is engineered to CE Class A-1 codes for open water, a 90-degree impact from a wall of water hitting a cat’s slab sides and large windows will put your boat at maximum risk. The sails design paralleled the mast designs. This was enough to get him back on track speedwise, and in a variety of conditions, he managed to beat Heemskerk by an increasing margin each race to retail his World title. Should mast be tapered extra measurement U1 & T need to be taken and the formulae on measurement certificate utilised. The Australis hulls were pointed at both ends similar to a canoe, in an attempt to produce a drag-reducing hull. Within a couple of years these foils became more commonplace and by 2008 German sailor, Bob Baier, had won the European championships using a set. Formula 18, the sports catamaran for development. This is a compromise to the total mainsail area of approximately 30%. The height from the water level to the tip of the mast. US A-Class Association. The A-Class logo was chosen by the IYRU when their committee decided in 1956 to classify the catamarans into those 4 categories. The progressive generation of. Rigid wing type rigs were also seen occasionally. These boats are in class by themselves, delivering the promise of real high performance multihull sailing. There is no meaningful way to quantify that loss as it will depend on the sails set, wind conditions, point of sailing, your motivation, etc. So both the Taipan and the BIM were brought into existance by this A-cat class and share many tricks developed in this class over time. Like her big sister, the lounge on the Leopard 45 includes a seating area, a sunbed, and a table. (The class has a minimum of 5kts and max. A touchy matter… This area has traditionally seen the greatest developments in the past. This was, in effect, full size model testing. The designs were often determined by the materials available and nowadays space age construction techniques are possibly one reason that the modern boat is now becoming increasingly popular, as it is producing immensely stiff and strong yet light boats, capable of withstanding hard racing for several years. The hull may be of any material. Formula 18 (or F18) is a class of sport catamarans defined in a "boxing rule". ... Bimare, is another well known name in the A-cat circuit (which is the most innovative regatta catamaran class in the world). Posts about Mast Height written by tedclements. Please don't forget pictures with your article.Editor, For static content like calendar entries, media or manufacturer links.Webmaster. Over the last 15 years much work has been done on the design of foils (rudders and daggerboards). We design our A class sails to allow the mast to be rotated well back. They have low clearance. Worlds 2022 confirmed for St Pete, FL - April 2022 . The sail itself remains the same fully battened high roach cut and hidden away inside the MainTamer is the standard Selden single line reefing boom. Acknowledging that they can’t instantly try different sail styles in succession they however report no apparent loss of perceived ‘performance’. It has a single wingsail with two aerodynamic flaps, instead of the conventional mast and sail combination.. Miss Nylex won the ICCT in 1974 and was the first catamaran in the world to win the race using a wingsail. A slight sail trim here, a small mast rotation there - it all has an effect, which is more noticeable because you are traveling faster. The reason being, that the mast itself creates a lot of profile over the rig and therefore it is very important to be able to reduce the wind age over the mast by rotating back as the wind increases. This rule sets eligibility criteria (max/min) such as width, length, weight, sail area, mast height and materials to be used . A very well though out design. These required the leech to be cut away in a concave manner to conform the area rule, but now the more popular ‘800’ head offers a good compromise of power and heeling moment. Much design work was done over the winter of 2015/16 and two of the major manufacturers both produced more optimized designs. LOA: 11.8 m. Beam OA: 6.45 m. Centreline Beam: 5.25 m. Displacement: 3000 kg. The finish is like the rest of the boat a class for its own. Hi does anyone know of some popular or usuall mast height/hull length ratios for cats smaller than about 15ft? The widest part is towards the bottom with the result that the hull won’t sink as far before the buoyancy starts to push it up again so floats higher. If your cruising plans involve a bridge with height restrictions, a power boat may be the better option. Over the years we discussed the furling main issue periodically and it was with some satisfaction that the announcement was made that Selden was ready to offer the equipment. There was certainly no compromise, the sailplan as it still stands was considered to be adventurous enough. More recently designers, such as the US mast maker and ‘A’ cat ace Ben Hall, have experimented with a wing sails. So, faster uphill, faster downhill, what’s not to like? Previously the underside of the tramp was a mass of ropes, chords and bungees. This rule sets eligibility criteria (max/min) such as width, length, weight, sail area, mast height and materials to be used . For a performance oriented cruising boat, that came out around 39' LOA. I believe you could put lots of catamaran boat length, under a 45 foot sloop rigged or ketch rigged mast set up. But in the early 1980s the ‘A’ class moved more towards an untapered wing type mast which was able to be rotated, somewhat like the leading edge slat on an aircraft wing, and thus create the sail shape more efficiently and to adjust it to cope with the windspeed changes created by the apparent wind. The Dart 18 was designed in 1975 as a One Design Class by Rodney March, who was also responsible for the design of the Olympic Tornado class catamaran. The mainsail has been designed by North Sails specifically for the Antares and is well within the maximum capacity of the mast system. Specifications . The North Sails design therefore accepts the relatively limited roach that may be supported on a series of short vertical battens. Catana 41 12.38 m from Length 2,63 m from Draft. Back in 1978, at the European championships, a wing sail proved unbeatable in light winds. The ‘D’ Class was 32ft and a sail of 500ft2 with three crew, but rapidly dwindled away. They also tend to have the beams bonded in making it a very stiff one-piece unit. I only saw it once and I think it was not a success as it was as expensive as 2 complete A-class hulls, in today’s value about € 12000. Should include the height all the way to the tip most antenna. This means the contribution of the sail over a period of cruising is much greater, isn’t that really ‘performance’? This meant that conventional L shaped boards, similar to the AC boats foils, are not class legal. It would appear that the design curve is starting to flatten out again now as regards hull and foil design with these two boats setting the standard of performance. - The stiff section 90+kg. The full roach, slab reefing, fully battened mainsail system is there for owners who can enjoy the advantage of it. The sail has its centre of effort lower down, and thus reduces the heeling force created by the fatter head sail and is ideal for a foiling design. The ‘A’ class is by far the largest remnant of the four classes. Who knows what is around the corner designwise, but the ‘A’ cat should be able to meet the challenge. About the SPITFIRE CATAMARAN sailboat The sailplan / stability design exercise pre-dated the establishment of any benchmarks such as the ISO Standards now offered for offshore Category A vessels so we used experience with the company’s other existing designs and charted the sailplan/hull parameters/wind speeds to establish a threshold that we knew would be safe and forgiving to the maximum degree that could be practical. Both designs foil earlier and are more stable when doing so making them easier to control. As far as I know there are 2 different masts available. The Hobie Cat 16 is a 16’7” (5.05m) double handed sport/beach catamaran designed by Hobbart (Hobie) Alter (United States). The Polish Exploder came out with their Ad3, with a design input from the Spanish based D3 Applied Technologies design team. In common with all modern catamarans in its size range, the boom is fairly high above the deckhouse. The more popular sailing catamarans in the 40-ft range are Lagoon 400S2, Bali 4.0, Leopard 40, Nautitech Open 40, and Fountaine Pajot Lucia 40. mast : 1,4 sq. Thanks to high modulus carbon, this new mast is even 1 kilogram lighter than the old mast. Heights provided by manufacturers often underestimate because of the antenna. About Us. The other was the Holland Composites DNA F1 design. The boom extrusion is in common with both configurations but the internal provisions for single line slab reefing are absent. We now have it. Now with over 210 units produced, the Leopard 40 was the first of the Leopard Range to embrace the innovative layout with a forward-facing galley, something that has now become a staple on the newer Leopard models. It was the replacement for the aluminium mast and it was lighter. Faced with the necessity to remove its cover, release the gaskets, go through the hoisting process with a possibility of shortly having to drop or reef sail and reverse the process, owners are justifiably reluctant to use the main much of the time, especially when it involves excursions out into inclement conditions. "Its mast-height-to-waterline-length ratio (32 to 16) is 200 percent, which sets a record in my book. A second, lesser factor, is the load carrying capacity. The first speed tests over the last two months are very promising and I’m looking forward to fully adapt the sail and particularly me to this new mast.www.marstrom .com ———- Many home built designs turned up, and home building of ‘A’ Cats continues today, particularly in the USA, where home building tends to be more popular. Membership. The ‘A’ class rules allow you to do anything as long as the total area, including the mast, does not exceed 150ft2. C-Tech manufacture products for the A-Class catamaran, Farrier 28 & Other Designs of multihulls The Australis design won and gained international class status. This is a sail that uses the trampoline as the end plate, making it more efficient, similar to winglets seen on airliners. Units built: Hobie 14 46,000, Hobie 16 135,000, Hobie 18 18,000, Hobie Dragoon 800, Hobie Tiger 1,100 Hobie Wildcat 332 An innovative, contemporary catamaran New for 2018, Leopard Catamarans is excited to announce that we have made some enhancements to the successful Leopard 40. Aptly named the SpaceCraft, they stand out in any marina or boat show. 8,3 kg for standard section and 8,6 kg for stiff section. Electronics: vhf, compass, cockpit speakers, gps, log speedometer, autopilot, … We design our A class sails to allow the mast to be rotated well back. Home. A, B, C and D as construction classes. The section is tapered from approx 160×60 mm in the bottom to 130×45 mm in the top. We would like to have the same possibilities for young multihull sailors. The Leopard 40 still offers more interior living space than other catamarans of similar size, and no other yacht in this class of sailing catamarans boasts the speed, agility, or blue water performance that the Leopard 40 can. Rank: Mate; Registered: Jun 17, 2011; Last visit: Jan 27, 2021; Posts: 766; Posted: Apr 05, 2013 - 03:43 PM It seems many boats have masts that are 150% the hull length.--Greenville SC Offering sails and other go fast parts for A-class catamarans-- … This area has traditionally seen the greatest developments in the past. limit of 22 kts of wind for racing)  Beautifully fast and responsive yet without many of the unpleasant characteristics that some other cats will catch you out on, e.g. A big thank you to the builder, Chris Williams, for letting me share his work with the rest of the beachcat sailors. As the sail area is the determining factor, not the shape, variations were tried at various times. But the foil building technology steadily improved and a consistent way was found of producing extremely strong shaped daggerboards from carbon composites. The two foil types are causing a little debate within the class though. An A-Class catamaran achieves a boat speed of 5 knots in about 3 to 4 knots true wind speed (TWS). In early 2012 International Sailing Federation evaluated vessels for the mixed multihull class at the 2016 Olympic Sailing Regatta. Then 2015, in the search for more power but with less sideways pressure, as required by a foiling boat’s need to be sailed flatter, he reappeared with one at the 2015 Dutch Nationals and wiped the floor with everyone, including Glenn Ashby, who was there getting ready for the Worlds a few weeks later. Although full length vertical battens could support a roach similar to that of the standard mainsail, practical issues preclude such awkward stuff on an ocean cruising vessel, (imagine a raising/lowering exercise with 40’+ battens to handle). The ‘C’ class was another twin, but at 25ft with a 300ft2 rig, has become a super sophisticated monster and the pinnacle of small cat design that races for the Little America’s Cup. As a result of this, Glenn Ashby won yet another world title. The next jump looks like it will be in rig design. The optional ‘new’ element for Antares is the Selden in-mast furling system which primarily involves the mast extrusion itself. 76 x 2.4 x 2200mm : A-Class tiller extensions. A … a class catamaran mast height does anyone know of some popular or usuall mast height/hull length for... Gradually these materials gave way to the sail area, a sunbed, and,. C and D as construction classes and longer, and a table to strong winds from,. 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