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2024 Boat of the Year Best Trimaran: Dragonfly 40 Ultimate

• By Dave Reed
• December 20, 2023

“Classy.” That was the first word that came to mind for Boat of the Year judge Mike Ingham when he stepped aboard the formidable 40-foot trimaran from Dragonfly, an unexpected and welcome late entry to the competition in Annapolis. “It almost feels as if the boat is intentionally understated but overdelivered because once you start looking closer at the details and craftsmanship, it just keeps getting more impressive.”

Builder and company owner Jens Quorning, whose family has been building trimarans in southern Denmark since 1967, says the Dragonfly 40 is the biggest boat they now build and a worthy holder of the flagship title. “Building a boat of this scale is complicated,” he says of the folding trimaran. “It takes three years to develop a new design, and this is for owners looking for a bigger boat, with better performance, capable of more long-distance sailing.”

The result is a powerful trimaran aimed at experienced owners who appreciate the sheer pleasure of racing and cruising on three hulls. This is not your average production multihull. It is a powerful and luxurious sailing machine capable of knocking off fast miles in comfort. Slip down below and you’re immediately immersed in a master class of woodwork and joinery. There are berths for four, including a giant master under the cockpit, plenty of standing headroom, and a comfortable salon and galley arrangement that’s monohull-cozy. “We do not offer a big house on the water,” Quorning tells the judges. “But if you really want a fine and elegant yacht with double-digit sailing, this is what we do.”

For our tests, Dragonfly presented its Ultimate edition, the midrange version. An upscaled Performance model is an all-carbon version with a taller mast. And in the lightest wind of the week, sub-10 knots, the trimaran teased the judges with its potential. Still, in the light stuff, the boat delivered a winning experience.

“It was a dream to sail upwind and downwind, almost effortlessly,” Ingham says. “With the gennaker up, at about 100 degrees true, we were going faster than the wind, and with winch pods on each side of the steering wheel, everything was as ergonomic as you could possibly imagine. The electric winches made it a cinch to furl and unfurl the headsails through the tacks and jibes, and the sails trimmed in perfectly every time.”

The feather-light feel of the helm, Ingham adds, was as smooth as a balanced dinghy. “With tiny movements on the wheel, the boat would immediately respond, but I could also walk away from the helm for a few minutes and the boat would stay right on track. Crazy—I think it steered itself better than I did.”

That’s the trait of a good trimaran, Greg Stewart says. The Dragonfly 40 has a lot of buoyancy in the bows, and while the center hull is substantial, the tall trussed rig and square top mainsail provide plenty of power. “The biggest thing that struck me is how easily accessible everything is,” Stewart says. “Clearly, every detail is painstakingly thought out, and I can’t believe how beautifully built the interior is. It’s top-notch, from the glasswork to the paintwork inside and out. Down below, we were all blown away by the finish.”

There’s no denying the boat is expensive at upward of $1 million, but the test boat had quality race sails, a full electric-winch package, and a long list of high-spec extras. At nearly 15,000 pounds light, it’s a substantial boat—not trailerable, but foldable with Dragonfly’s trademark technique that Corning describes as mimicking parallel rules. The floats are 2 feet longer than the center hull, with buoyancy pushed well forward into the reversed bows, and the center hull is narrow at the waterline before sweeping upward to a high and hard chine. This pronounced hull shape allows for the generous amount of headroom, and high bench seats that flank a long centerline table, which can, of course, drop down to create a double-size berth.

Allen noted that the center hull’s wide side decks provide a secure pathway to the bow, rather than across the trampolines. He was also impressed with the ease of sailing the boat and the comfort belowdecks. “When we were doing 9 knots, I went below and there was silence. It’s comfortable and beautiful. It would be a blast to do some long point-to-point racing on it, doublehanded or with like a crew of four, max.”

Stewart agreed, adding that beyond its noteworthy gunkholing attributes, the engine is well aft on the center hull, allowing it to be motored safely into shallow anchorages. The daggerboard is mechanically raised into the trunk, and the rudder kicks up. “I also think it would be great for a distance race or rally type of event,” Stewart says. “Its performance and versatility are what appeal to me, but the build quality is what really sets it apart.”

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DragonFlite 95 USA Class Owners Association

Portal for the DF95 in the USA

Welcome to the DF95 Class Owners Association web site!

This site is your online resource to all things DF95 in the USA.  This newest RC yacht is poised to make a big splash in the RC sailing community. This multi-rigged boat excels in a large range of wind conditions. As a Restricted One-Design boat, skippers will be putting their sailing skills to the test not their wallet. It promises close and exciting racing in an affordable and easily maintained design.

New Class Rules Effective 1/1/24

  2023 df95 coa regatta management manual   this guide is meant to provide both some required standards for all ranking regattas as well as some best practices. all clubs that plan to host a ranking regatta need to read and follow this manual. (1/15/2023) , joining the class association – apply to get a sail number – see below.  .

Sail Registry (Getting Assigned A Sail Number)       To get a sail number, review the sail registry page (click the sail registry tab above) and find an available number, fill out the online form (click the DF95 registration tab above) and request that number, submit payment via paypal from the bottom of the registration form. Then, please, be patient. I try to update the registry at least once a week (usually Thursday evenings) so it might be a few days before you hear from me. After, I register you and your number, you will receive an email verifying your sail number. 

Dragonfly Trimarans

Dragonfly trimarans for sale.

The Dragonfly 25 is a easily trailerable trimaran for sailors looking for both performance and comfort.

Dragonfly 25.

The Dragonfly 28 is an excellent trailerable trimaran built for performance and cruising comfort.

Dragonfly 28.

The Dragonfly 32 is the perfect combination between family cruising, racing, and offshore adventures.

Dragonfly 32.

The all-new Dragonfly 40 Performance Cruiser is a cutting edge design with a spacious cockpit and stylish interior.

Dragonfly 40, dragonfly trimarans for sale in the us.

Dragonfly Trimarans are built in Denmark to extremely high standards by Quorning Boats. The current Dragonfly range extends from the trailerable 25 and 28 footers, up to the larger 32 and 40 foot models. All Dragonfly Trimarans employ their hallmark “swing wing” system for retracting the floats for docking or in the case of the 25 and 28 for easy trailering. One feature of this system is that the floats remain in the vertical orientation, which is an advantage when keeping the boat in a slip because it eliminates the issue of fouling of the outside surfaces of the floats. Another hallmark of Dragonfly trimarans is their attention to detail in the interior design and finish, creating a beautiful comfortable place to spend time inside the boat. If you are looking for a Dragonfly Trimaran for sale, Windcraft Multihulls is a US dealer located in the Southeastern United States. Contact us for more information.

Click here to read more about why you should buy a Dragonfly Trimaran.

Dragonfly Demo Sails

We have several locations around the country where you can try out a Dragonfly trimaran. Please call or email us [...]

Corsair Demo Sails

Windcraft is pleased to be able to offer demo sails with our partner Tommy Clark on [...]

Rapido Trimaran update

Rapido Trimarans offers four ultra modern, high performance cruising trimarans, the Rapido 40 and Rapido 50,Rapido 53 XS, and [...]

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Dragonfly 800

• August 5, 2009

If you think cruising multihulls are staid and stodgy, the Danish Dragonfly range will put you right. This cleverly designed folding trimaran has a blistering turn of speed – up to 20 knots on a reach and about 12 knots hard on the wind – and can tack on the proverbial sixpence. She’s seaworthy enough for offshore passages – designer Eric Quorning sailed one to victory in the two-handed Round Britain and Ireland Race – and set up for easy handling, with a small jib that can be furled in seconds, and lazyjacks help keep the mainsail manageable. The folding floats are wound in (for marina berthing) and out (for sailing) via the primary winches, a procedure that takes about two minutes. The kick-up rudder and centreboard allows you to sail her ashore, like a beach cat. So where’s the catch? Down below, you pay a price for the slim hull that makes the Dragonfly perform so well under sail. The accommodation is cramped, with no standing headroom and limited stowage. There are four single berths, a table that doubles as the centreboard case, and a sea toilet under the saloon seating.

LOA 8m (26ft 3in) LWL 7.6m (24ft 11in) Length folded 9m (29ft 6in) Beam 6.05m (19ft 10in) Draught 1.25m (4ft 2in) with plate down , 0.35m (1ft 2in) with plate up Displacement 1,100kg (2,425lb) Class association www.dragonfly-trimarans.org YM test report July 2006

Dragonfly eyes changing the trucking industry

Dragonfly Energy, the green energy storage company headquartered in south Reno, is making a push to get widespread adoption of its Battle Born Batteries in the trucking industry to alleviate unnecessary truck idling when big rigs aren’t in motion. Courtesy

By Rob Sabo

Tuesday, March 19, 2024

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Dragonfly Energy has gained so much traction providing lithium-ion batteries for the RV industry that its batteries now come as standard equipment with every iconic Airstream travel trailer that’s shipped from the company’s manufacturing facility in Jackson Center, Ohio.

The green energy storage company headquartered in south Reno is making a similar push to get widespread adoption of its Battle Born Batteries in the trucking industry to alleviate unnecessary truck idling when big rigs aren’t in motion.

Wade Seaburg, chief revenue officer for Dragonfly Energy, said engine idling is a huge issue in the trucking industry, yet the solution is as simple as a tap-in putt.

“From a sustainability aspect, there is no better solution than Battle Born Batteries,” Seaburg said.

The footprint of a Battle Born all-electric APU electric power system is about 32” by 31” and 8” deep. In big rigs, it sits in between the frame rails just to the rear of the cab, so it’s completely unobtrusive. The system provides 540 amp hours at 12 volts – more than enough to power all internal devices and heating and cooling systems throughout a mandatory 10-hour overnight rest period, Seaburg said.

According to Argonne National Laboratory of Lemont, Ill., diesel-powered passenger vehicles, along with light-, medium- and heavy-duty trucks, burn more than six million gallons of diesel fuel each year — all without moving.

An idling big rig truck burns as much as one gallon of diesel fuel per hour. At $4 a gallon, a 10-hour rest period could cost as much as $40. Heavy duty trucks often idle between 1,800 and 2,500 hours each year, which could result in approximately $9,200 to $10,000 in fuel charges each year just to keep the cab warm or cool and power other at-rest equipment, such as televisions, computers, refrigerators and any other powered devices in the sleeper.

“Our message is, ‘Let’s leave the diesel engine off when we are not moving freight,’” Seaburg said.

Seaburg said there are three ways long-haul trucks provide internal power for driver comfort and convenience:

• Auto stop and start.  The primary diesel engine starts and stops running as needed when the truck is stopped. Unnecessary idling in trucks without auxiliary power units consumes an average of 10,080 gallons of fuel over a four-year period.

• Diesel APU (auxiliary power unit). A second, smaller diesel engine is installed to power all at-rest loads. These smaller engines sip diesel at a quarter-gallon per hour, but the fuel savings are reduced by the hefty $14,000 up-front installation cost, Seaburg said.

• Electric-hybrid APU.  This type of power supply uses eight lead-acid batteries that are joined together. Batteries typically need to be replaced after 18 to 24 months, and as the batteries age, they lose their efficiency and end up consuming more diesel fuel than a standard diesel APU because they engage the main diesel engine multiple times each rest period to maintain the voltage necessary to provide sufficient power to the cab.

“From a driver’s perspective, restarting and stopping the engine wakes you up no matter how long you have been a driver,” Seaburg said. “When the engine comes to rest it vibrates, and that jolts drivers out of a deep sleep.”

Dragonfly Energy has more than a decade of experience providing Battle Born Batteries to the RV industry, and with hundreds of thousands of battery units installed, it’s gained industry-wide cachet that’s helping the company penetrate the trucking industry, Seaburg said.

“Many of the people in the trucking industry who we are presenting to know us because they have an RV or a boat, which makes the conversations easier,” Seaburg said. “We have more than 300,000 batteries being used in the RV market, so we have the reputation to be able to really open doors in the trucking industry.”

Seaburg told NNBW that the idea to provide lithium-ion-powered auxiliary batteries to the trucking industry came about two years ago during the annual technology and maintenance conference of the American Trucking Association. Since then, Dragonfly Energy has been engaging executives at trucking companies to tout the benefits of Battle Born Batteries versus other types of auxiliary power.

Those conversations center around a fleet’s understanding of how they are operating and how much fuel is being used due to engine idling, Seaburg said. Dragonfly Energy also has joined all the major trucking trade organizations and is a member of both the American Trucking Association and Truckload Carriers Association.

“Most of the work comes down to the maintenance department, and if you are VP or director of maintenance, you are putting out fires every day trying to keep trucks running and freight on the road. We are trying to get as far up the food chain as we can and speak with someone who has the ability to look at fuel usage and consumption, with an eye on sustainability, to drive the conversation back down to the maintenance level and make it a priority.

“With the breadth of products we already have in the RV industry, we are able to show those executives that our batteries have the reliability to withstand the rigors of the trucking industry. It’s a highly abusive environment – most trucks are turned on 350 days per year. They are used everyday. However, a long haul truck’s sleeper cab is nothing more than an RV. It’s a more abusive environment, but from an application set and how the power is being charged and discharged, it is the same as what we see in the RV market.”

Dragonfly Energy expects adoption of its products in the trucking industry to mirror the RV industry, Seaburg added. In the RV industry, Dragonfly initially engaged with consumers and showed them the benefits of installing a Battle Born Battery system. Eventually, Seaburg said, RV manufacturers engaged with Dragonfly to figure out how to put Battle Born Battery systems on their vehicles as standard equipment.

“If we gain traction with the biggest trucking fleets, eventually they will go to the manufacturers and request that our system is factory installed. We see this trend going up the chain until we are a factory-installed option; that is our goal,” Seaburg said.

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First refuelling for Russia’s Akademik Lomonosov floating NPP

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The FNPP includes two KLT-40S reactor units. In such reactors, nuclear fuel is not replaced in the same way as in standard NPPs – partial replacement of fuel once every 12-18 months. Instead, once every few years the entire reactor core is replaced with and a full load of fresh fuel.

The KLT-40S reactor cores have a number of advantages compared with standard NPPs. For the first time, a cassette core was used, which made it possible to increase the fuel cycle to 3-3.5 years before refuelling, and also reduce by one and a half times the fuel component in the cost of the electricity produced. The operating experience of the FNPP provided the basis for the design of the new series of nuclear icebreaker reactors (series 22220). Currently, three such icebreakers have been launched.

The Akademik Lomonosov was connected to the power grid in December 2019, and put into commercial operation in May 2020.

Electricity generation from the FNPP at the end of 2023 amounted to 194 GWh. The population of Pevek is just over 4,000 people. However, the plant can potentially provide electricity to a city with a population of up to 100,000. The FNPP solved two problems. Firstly, it replaced the retiring capacities of the Bilibino Nuclear Power Plant, which has been operating since 1974, as well as the Chaunskaya Thermal Power Plant, which is more than 70 years old. It also supplies power to the main mining enterprises located in western Chukotka. In September, a 490 km 110 kilovolt power transmission line was put into operation connecting Pevek and Bilibino.

Image courtesy of TVEL

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For the first time Rosatom Fuel Division supplied fresh nuclear fuel to the world’s only floating nuclear cogeneration plant in the Arctic

The fuel was supplied to the northernmost town of Russia along the Northern Sea Route.

The first in the history of the power plant refueling, that is, the replacement of spent nuclear fuel with fresh one, is planned to begin before 2024. The manufacturer of nuclear fuel for all Russian nuclear icebreakers, as well as the Akademik Lomonosov FNPP, is Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC), a company of Rosatom Fuel Company TVEL that is based in Elektrostal, Moscow Region.

The FNPP includes two KLT-40S reactors of the icebreaking type. Unlike convenient ground-based large reactors (that require partial replacement of fuel rods once every 12-18 months), in the case of these reactors, the refueling takes place once every few years and includes unloading of the entire reactor core and loading of fresh fuel into the reactor.

The cores of KLT-40 reactors of the Akademik Lomonosov floating power unit have a number of advantages compared to the reference ones: a cassette core was used for the first time in the history of the unit, which made it possible to increase the fuel energy resource to 3-3.5 years between refuelings, and also reduce the fuel component of the electricity cost by one and a half times. The FNPP operating experience formed the basis for the designs of reactors for nuclear icebreakers of the newest series 22220. Three such icebreakers have been launched by now.

For the first time the power units of the Akademik Lomonosov floating nuclear power plant were connected to the grid in December 2019, and put into commercial operation in May 2020. The supply of nuclear fuel from Elektrostal to Pevek and its loading into the second reactor is planned for 2024. The total power of the Akademik Lomonosov FNPP, supplied to the coastal grid of Pevek without thermal energy consumption on shore, is about 76 MW, being about 44 MW in the maximum thermal power supply mode. The FNPP generated 194 million kWh according to the results of 2023. The population of Pevek is just a little more than 4 thousand, while the FNPP has a potential for supplying electricity to a city with a population of up to 100 thousand people. After the FNPP commissioning two goals were achieved. These include first of all the replacement of the retiring capacities of the Bilibino NPP, which has been operating since 1974, as well as the Chaunskaya TPP, which has already been operating for more than 70 years. Secondly, energy is supplied to the main mining companies in western Chukotka in the Chaun-Bilibino energy hub a large ore and metal cluster, including gold mining companies and projects related to the development of the Baimsk ore zone. In September 2023, a 110 kilovolt power transmission line with a length of 490 kilometers was put into operation, connecting the towns of Pevek and Bilibino. The line increased the reliability of energy supply from the FNPP to both Bilibino consumers and mining companies, the largest of which is the Baimsky GOK. The comprehensive development of the Russian Arctic is a national strategic priority. To increase the NSR traffic is of paramount importance for accomplishment of the tasks set in the field of cargo shipping. This logistics corridor is being developed due regular freight voyages, construction of new nuclear-powered icebreakers and modernization of the relevant infrastructure. Rosatom companies are actively involved in this work. Rosatom Fuel Company TVEL (Rosatom Fuel Division) includes companies fabricating nuclear fuel, converting and enriching uranium, manufacturing gas centrifuges, conducting researches and producing designs. As the only nuclear fuel supplier to Russian NPPs, TVEL supplies fuel for a total of 75 power reactors in 15 countries, for research reactors in nine countries, as well as for propulsion reactors of the Russian nuclear fleet. Every sixth power reactor in the world runs on TVEL fuel. Rosatom Fuel Division is the world’s largest producer of enriched uranium and the leader on the global stable isotope market. The Fuel Division is actively developing new businesses in chemistry, metallurgy, energy storage technologies, 3D printing, digital products, and decommissioning of nuclear facilities. TVEL also includes Rosatom integrators for additive technologies and electricity storage systems. Rosenergoatom, Joint-Stock Company is part of Rosatom Electric Power Division and one of the largest companies in the industry acting as an operator of nuclear power plants. It includes, as its branches, 11 operating NPPs, including the FNPP, the Scientific and Technical Center for Emergency Operations at NPPs, Design and Engineering as well as Technological companies. In total, 37 power units with a total installed capacity of over 29.5 GW are in operation at 11 nuclear power plants in Russia. Machinery Manufacturing Plant, Joint-Stock Company (MSZ JSC, Elektrostal) is one of the world’s largest manufacturers of fuel for nuclear power plants. The company produces fuel assemblies for VVER-440, VVER-1000, RBMK-1000, BN-600,800, VK-50, EGP-6; powders and fuel pellets intended for supply to foreign customers. It also produces nuclear fuel for research reactors. The plant belongs to the TVEL Fuel Company of Rosatom.

Rosatom obtained a license for the first land-based SMR in Russia

On April 21, Rosenergoatom obtained a license issued by Rostekhnadzor to construct the Yakutsk land-based SMR in the Ust-Yansky District of the Republic of Sakha (Yakutia).

ROSATOM and FEDC agree to cooperate in the construction of Russia's first onshore SNPP

ROSATOM and FEDC have signed a cooperation agreement to build Russia's first onshore SNPP in Yakutia.

Rosatom develops nuclear fuel for modernized floating power units

Rosatom has completed the development of nuclear fuel for the RITM-200S small modular reactor designed for the upgraded floating power units.

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The Dragonfly Swing Wing System

The unique Dragonfly Swing Wing system has been standard on all Dragonfly Trimarans since the introduction of the system in 1989.   A very important feature by the Dragonfly Swing Wing system is the fact that the boats can stay folded in a marina berth. This special design, where the floats move down deeper into the water when folded and actually lifts the centre hull by 7 to 10 cm, gives this extra stabile comfort.   Even when folded, you can still get into the floats storage and still you have no fouling problems. Further, to improve the stability, this is also why all the taller mast comes standard in carbon on the Dragonfly series.

The Dragonfly 25 and 28 can easily be folded manually, but on the Dragonfly 32 you can operate the Swing Wing system with one or two optional electrical winches. On the Dragonfly 40 you get 4 electric winches on a standard boat which you can use to operate the Swing Wing system.

Last but not least, the folding system today makes it possible for the Dragonfly 25 to fold and fit directly into a 40’ container. The Dragonfly 25 and the 28 to trailer easily when just folded. For the bigger boats, road transport is still possible by truck, and winter storage also much easier.

Over the years, the Dragonfly folding system has obviously been finetuned and is for sure the fastest and easiest folding system for trimarans in the world.

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Strange Glow Over Moscow Skies Triggers Panic as Explosions Reported

B right flashes lit up the night sky in southern Moscow in the early hours of Thursday morning, new footage appears to show, following reports of an explosion at an electrical substation on the outskirts of the city.

Video snippets circulating on Russian-language Telegram channels show a series of flashes on the horizon of a cloudy night sky, momentarily turning the sky a number of different colors. In a clip shared by Russian outlet MSK1.ru, smoke can be seen rising from a building during the flashes lighting up the scene.

Newsweek was unable to independently verify the details of the video clips, including when and where it was filmed. The Russian Ministry of Emergency situations has been contacted via email.

Several Russian Telegram accounts said early on Thursday that residents of southern Moscow reported an explosion and a fire breaking out at an electrical substation in the Leninsky district, southeast of central Moscow.

Local authorities in the Leninsky district told Russian outlet RBC that the explosion had happened in the village of Molokovo. "All vital facilities are operating as normal," Leninsky district officials told the outlet.

The incident at the substation in Molokovo took place just before 2 a.m. local time, MSK1.ru reported.

Messages published by the ASTRA Telegram account, run by independent Russian journalists, appear to show residents close to the substation panicking as they question the bright flashes in the sky. One local resident describes seeing the bright light before losing access to electricity, with another calling the incident a "nightmare."

More than 10 villages and towns in the southeast of Moscow lost access to electricity, the ASTRA Telegram account also reported. The town of Lytkarino to the southeast of Moscow, lost electricity, wrote the eastern European-based independent outlet, Meduza.

Outages were reported in the southern Domodedovo area of the city, according to another Russian outlet, as well as power failures in western Moscow. Electricity was then restored to the areas, the Strana.ua outlet reported.

The cause of the reported explosion is not known. A Telegram account aggregating news for the Lytkarino area described the incident as "an ordinary accident at a substation."

The MSK1.ru outlet quoted a local resident who speculated that a drone may have been responsible for the explosion, but no other Russian source reported this as a possible cause.

Ukraine has repeatedly targeted Moscow with long-range aerial drones in recent months, including a dramatic wave of strikes in late May.

On Sunday, Moscow Mayor Sergei Sobyanin said the region's air defense systems had intercepted an aerial drone over the city of Elektrostal, to the east of Moscow. No damage or casualties were reported, he said.

The previous day, Russian air defenses detected and shot down another drone flying over the Bogorodsky district, northeast of central Moscow, Sobyanin said.

There is currently no evidence that an aerial drone was responsible for the reported overnight explosion at the electrical substation in southern Moscow.

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