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Location: Cocoa Beach, Florida Vlad Murnikov, who is behind the concept, is an innovative designer who believes as I do ,that it is possible to build a monohull sailboat that can beat a multihull. Windsurfers have beaten most multi speed records with some exceptions and the Moth is faster than any beach cat under 20'. Location: Roaring Forties I believe it's possible too Doug, but the current concept doesn't seem suitable for a circumnavigation. Aside from getting stuck in fishing nets and other debris, the bulb canting keels are no doubt more vulnerable than a keeled hull. As far as a canting bulb keel goes, almost every major monohull round the world race is sailed in boats with just such a keel-and despite popular scuttlebutt to the contrary, they have proved remarkably safe-particularly in recent years. I'd be leery of making engineering judgements of Vlads prototypes from very, very early renderings. The longer you go in a boat like this, the increased liklihood you'll have problems with the vulnerable parts I described before. No disrespect to the notion of going faster, but reliablity & durability are key design components of endurance racing hulls. Location: Melbourne, Australia So far none of the boats with flying keel bulbs have proved to be super fast although they compare reasonably well with other canting keel monohulls. Originally Posted by Corley So far none of the boats with flying keel bulbs have proved to be super fast although they compare reasonably well with other canting keel monohulls. Doug - the pictures that you've shown are very informative - - however they are by no means - a round the world image - nor were they intended to be.
Location: Melbourne, Australia My apologies if I came across all furious I'm not it's just we are so inundated in these PR claims of performance all the time and its normally for boats that dont even exist. When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. The LCP-45 is a low cost dual axis inclinometer sensor supplied in a PCB format for mounting onto 0.1" PCB headers. A ballast tank is a compartment within a boat, ship or other floating structure that holds water. Lincoln, then an Illinois attorney, patented a ballast-tank system to enable cargo vessels to pass over shoals in North American rivers. In order to provide adequate stability to vessels at sea, ballast is used to weigh the ship down and lower its centre of gravity. In submarines ballast tanks are used to allow the vessel to submerge, water being taken in to alter the vessel's buoyancy and allow the submarine to dive. Ballast tanks are also integral to the stability and operation of deepwater offshore oil platforms and floating wind turbines.
The first effective submarines, those of World War I, had hulls that were broadly circular in cross-section, with a deck plate mounted midway. A secondary drawback of these internal ballast tanks could be poor sea-keeping when surfaced. For some time it remained practice to place the main ballast tanks outside the pressure hull, but to keep the smaller auxiliary tanks inside the hull and below the deck.
A Kingston valve is a type of valve fitted in the bottom of a ship's fuel, water and ballast tanks.
The valve connects the tank to the sea and when open, allows sea water to enter the tank for the purposes of cleaning the tanks and to admit water ballast. On submarines Kingston valves are fitted at the bottom of the submarine's ballast tanks in order to admit water when the submarine dives. The above describes certain ballast tanks, such as safety, negative and bow buoyancy tanks on vintage submarines. When surfacing, the Kingston valve gets shut so the introduced air gets trapped in the tank and pushes the water out the tank's bottom through the flood port. Kingston valves are sometimes used to scuttle or sink a ship, as was done for example, to the German aircraft carrier Graf Zeppelin. In submarine technology a vent is a valve fitted to the top of a submarine's ballast tanks to let air escape from the top of the ballast tank and be replaced by water entering through the opening(s) called "flood ports" or "floods" at the bottom of the tank. When on the surface a submarine's ballast tanks are filled with air which gives the vessel its buoyancy and in order for the submarine to submerge water is taken into the ballast tanks through the flood ports at the bottom of the tanks, effacing this excess buoyancy. The vents which are used to allow water to enter the submarine's main ballast tanks when it submerges are the main vents and it is air escaping though these that accounts for the spray sometimes seen when submarines dive. To get a submarine to surface, the main vents in the top of the tank are closed and high-pressure compressed air is blown into the ballast tanks, forcing the water out through the flood ports at the bottom of the tank.
Once on the surface, in order to conserve supplies of compressed air, a lower-pressure compressor is then used to remove the remainder of the water from the tanks.
The awesome military Ekranoplan amphibious flying ship are now the fastest Yachts in the World, exclusively by BENTLEY MARINE! Location: Australia There's a new kid on this block - well actually it's one of the oldest, just with a new toy. Unfortunately, I can't recall all the details, but I can tell that it was expected to be bloody quick!! Fond du Lac, WI - Mercury Racing of Fond du Lac, WI, Marine Turbine Technologies (MTT) of Franklin, LA and Bryant Enterprises of Maryville, TN have teamed up to develop a concept turbine outboard powered high performance bass boat. Overcoming water resistance requires the continuous operation of marine engines at 70 percent or more of their full power in order to maintain cruising speeds.
A production version of the turbine-powered Mercury Racing Outboard could be a perfect alternative power source for U.S. MTT founder Ted McIntyre is well known for his design of highly competitive turbine powered offshore race boats.
Location: Austin, Texas Tim Word has it that a small boat manufacturer in Texas has set out to build the world's number one performing flats boat. What i think i know and please correct me if i'm wrong(or rather what i think i have heard): a tri will be faster than a cat of similar leangth, but cat can be made bigger for the same amount of money invested. Slim monohulls can be pretty fast with small sailareas, maybe a thin mono canter could be faster than cats and tris with a maximum sailarea given? Originally Posted by Brorsan Been wondering for some time wich would be the fastest alternative for a given sail area, cat, tri, slim mono?

In boats under 20'(or so) the 11' foiler Moth monofoiler is the fastest(in foiling conditions-current class top speed 30 knots+)-beating cats and all other monohulls including aussie 18's. PS: Note that Kites and windsurfers are faster than all these boats but are not defined as sailboats. Location: Port Orchard, Washington, USA As your question is formed, there is no answer.
A vessel is nothing but a bunch of opinions and compromises held together by the faith of the builders and engineers that they did it correctly.
Originally Posted by Brorsan Jehardiman, if we say 30sqm upwind, cost and dimension of boat is not an issue, 1 person onboard, an overall race with all wind directions and wind forces How long a race? You have to decide what it is you are after, then meet some design cryteria on the one side and what is practical on the other side. Location: Arlington, WA-USA Also it would depend on how heavy or light the wind. I have noticed that over the recent years on long ocean going point to point records, that sometimes the conditions favor a tri and at others a cat. One local yacht wore that I sometimes crew on local races placed first and second in two recent races in a 26 foot sailboat despite much larger and more costly boats in the race. Oh, and no windsurfers, no kiters, no superspecial that only work in very very specefic conditions like sail rocket, and no airborn boats, foil assisted is ok. I say it once more, i'm not looking for a one solution answer, i'm looking for a discussion. Location: Milwaukee, WI If you think of the top speed at whatever angle of sail and not VMG, then a foiler. Everglades Challenge 2011 » Thread Tools Show Printable Version Email this Page Display Modes Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Search this Thread Advanced Search Similar Threads Thread Thread Starter Forum Replies Last Post Fastest classic sail yacht? With Spring in the air, the timing is right to review the basics of high performance boat operation to ensure you and your passengers have a safe and enjoyable Summer on the water. Our operation guide is packed with general performance boating information including a list of descriptive terms relating to propellers, hull types and overall boat performance.  Let’s first review the various performance boat hull configurations. I like to refer to catamarans (or cats as they are often called) as tunnel boats on steroids. In Hi-Performance Boat Operation – Part 2, I will review the important things to consider when preparing your new Mercury Racing outboard or sterndrive powered boat for the upcoming season.
I could see it doing well in a day race along the coast, but those parts just look too fragile to me for a 25,000 mile circumnavigation.
Structural fatigue appears to be a given considering the thin, flexible nature of the keel & lifting foil. I looked at a new 18' canting keel boat to see if DSS was used could it replace the canting keel: answer-with the canting keel fixed the boat had more RM upwind with DSS-and way more off the wind.
The hydraulic rams fail (several occurrences), and I recall a case from a few years ago where Sir Robin Knox-Johnson had to dive into the southern ocean in the Vellux 5 Oceans race to cut away a fishing net. I correctly remember the skipper saying - we could have gone faster but we needed to finish. No money bet of how many break-up however 'B-P 5' didn't - so I feel (am very bloody sure) that these new yachts have a way to go yet. While I am going sailing a rather quick cruising tri in SE Asian waters - I'll never be good enough to do what any of them do however that's not my goal & I'm just a bit older these days. Geez, for the first 45 years of my life there was no chance in hell that you could convince anyone that a small monohull only 11' long could beat ALL beach cats under 20'!
It has a digital interface with a full duplex RS232 output as well as a TTL level (3.3V) UART for connection directly to a micro-controller serial port. The units incorporate analogue and digital filters to give a response suitable for vehicle tilt monitoring. The criteria specify the separation of compartments within the vessel and also the subdivision of those compartments. A submarine may have several types of ballast tank: the main ballast tanks, which are the main tanks used for diving and surfacing, and trimming tanks, which are used to adjust the submarine's attitude (its 'trim') both on the surface and when underwater. Saddle tanks are fitted in pairs external to the pressure hull, one on each side, in a similar manner to that of a horse's saddle-bags, the positioning of which they resemble in appearance.
With the tanks full of water the submarine was stable, but when emptied, this large buoyant volume low-down led to excessive rolling. Early designs raised the weather deck and casing above the pressure hull, producing a ballast tank that wrapped around the upper part of the pressure hull (diagrams A & B). The valves allow water to enter the ballast tanks, the enclosed air escaping through the open main vents at the top of the ballast tanks. In the vent riser is a valve that when shut, prevents flooding the tank when the submarine is rigged for surface. In earlier times, the openings at the bottom of the ballast tank were fitted with valves known as Kingston valves. As the ballast tanks contain air when on the surface it is necessary to allow this air to escape, so that water may then enter the tanks, and this air is allowed to escape via the opened vents in the top of the ballast tanks. Similarly, aviation engines also experience continuous operation above 70 percent of their available power in order to keep an aircraft flying. Founded in 1990, MTT has perfected its knowledge of marine turbine installations and often is referred to as the marine turbine experts.
His goal was to build a boat that not only performs well at high speeds but one that can also handle rough water and is stable in tight turns.
The first time since I've been alive that a monohull is faster than multihulls even multihulls much larger like A-Cats, F18s. Let me give you an example: You got a 30 sqm upwind sailplan, you can shoose to put it on a cat, tri o canting mono. Sailboats are almost always compared leangthwise wich leads to very large sail areas on small vessels. Similar to steps, the pad reduces the wetted surface area the hull runs on, increasing top speed with minimal affect on the ride quality.
The sharp, 90-degree transfer where the tunnel sides meet the bottom of the sponsons helps the boat settle in the water as it enters a turn.

With the dual axis version the tilt threshold (the trip angle) can be adjusted individually for the X and Y axis. The International agreements rely upon the states which have signed the agreement to implement the regulations within their waters and on vessels which are entitled to fly their flag. For compactness the ballast tanks were wrapped around the batteries, low down and sharing the flat surfaces of the battery tank.
This was made worse as early submarines also spent almost all of their time surfaced, and had little freeboard to begin with. During peacetime the Kingston valves are closed when the submarine is on the surface, the valves and vents being opened to dive, but to reduce the time required for diving in wartime the Kingston valves are left permanently open when at sea, the water being kept out of the ballast tanks by the air pressure of the trapped air. This Kingston valve, controllable both manually and hydraulically, is known by some as main vent operating gear. When the sub is rigged for dive, this valve is opened and flooding the tank becomes an option. The vent riser valves get opened or shut manually during the rig for surface or rig for dive procedure.
When the weight of the displaced water becomes greater than the weight of the vessel, buoyancy becomes positive, and the submarine begins to rise. This one- of-a-kind turbine outboard-powered Stroker bass boat will undergo tests in the near future in preparation to set a new American Power Boat Association (APBA) world bass boat speed record. Current availability of surplus aircraft turbine engines, which can be refurbished at reasonable cost, has brought turbines into the marine propulsion picture.
Their engines have been featured in several government demonstrations to promote the feasibility and benefits of using turbine engines in government patrol boats and various military craft.
His career expands three decades of automobile racing, including drag, oval track and off- road racing. After two years and thousands of man hours, the Stroker bass boat hull design was completed.
Take any rule I can think of and tris are fastest, F40, Orma 60 even C class till they banned them! We encourage new and current owners to review the book and then get some in-boat driving lessons from your local high performance dealer. The softness of the ride depends on the angle of the “V”, called deadrise, radius of the keel line and the use of strakes.  If  your boating is mostly in larger bodies of water such as the Great Lakes or open seas, you may want to consider a boat with this hull type.
Mercury Racing offers a full-array of outboard and sterndrive propulsion options for the vee-bottom boater.
Vlad is considering using both a version of DSS and a canting keel but I wouldn't say that configuration is final, a fixed keel + DSS simplifies things a bit.
The Kingston valves linking the ballast tanks to the sea could be left open, a practice known as "riding the valves", and the water level in the tanks controlled solely by the vent and blowing air valves. Later designs, notably those of the US Fleet submarines and German U-boats, placed two separate ballast tanks lower down on the sides of the hull (diagram C). Normally, the tank is flooded when the Kingston valve is opened, usually hydraulically from the control room. The turbine engine, designed to run continuously at high power settings and on multiple fuels, is very reliable due to no reciprocating parts. The high performance 21-foot boat, with an exceptionally wide 94 ?"-inch beam, provides a stable, wide deck for anglers to fish from, carries a full tournament load and is easy to drive. The two leaders of the Barcelona world Race use such foils and are over 1000 miles ahead of the rest of the pack!
Those who do not have a qualified driving instructor in their area may want to consider Tres Martin’s Performance Boat School. The most recent change in this design over the past decade has been the incorporation of strategically placed notches or steps in the hull.
Air entering the tunnel generates lift as speed increases.The wetted surfaces and hull drag are reduced, for enhanced speed and ride quality.
Depending on the type of vessel, the tanks can be double bottom (extending across the breadth of the vessel), wing tanks (located on the outboard area from keel to deck) or hopper tanks (occupying the upper corner section between hull and main deck). The drawback was that the ballast tanks, open to sea pressure, had a flat surface to the crew compartment and were thus restricted in strength to the bursting strength of this flat plate.
In railway practice this would have been a "pannier tank", but for submarines the "saddle" label remained. One Kingston valve serves a pair, but each tank has a vent riser, with air connections and stop valves in the vent riser.
In addition, it provides a higher power-to- weight ratio in a smaller size than either diesel or gasoline engines.
This is an exciting time to be involved in fast sailboat design with spectacular new projects (and higher and higher speeds) happening all the time. Remember someone has to get to the end of the race - be it - 24 hrs or around the world - not just around th block or down the road a bit. In particular this led to accidents where the boat bottomed safely after an accident, but the excess pressure of 'blowing out' was sufficient to cause the internal tank wall to fail.
This is because a slight leak of air from the air line provided to blow the tank into the vent riser could slowly make the boat more buoyant. These tanks are filled in order to add weight to the ship once cargo has been discharged, and improve its stability. In general, they produce a smoother and faster ride over a vee-bottom in calm to mild chop.
In some extreme conditions, ballast water may be introduced to dedicated cargo spaces in order to add extra weight during heavy weather or to pass under low bridges. Our OptiMax 300XS is popular choice for those who choose outboard power for entry into the cat experience.

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