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​The NACRA 17 was designed from scratch to meet the specific criteria set out by ISAF for the 2016 Olympic multihull. entering these products,NACRA also produce a Formula 16 and a Formula 18 catamaran and we had initially considered entering these products,but with some changes in order to more closely match the ISAF requirements.

Since ISAF’s specification did not require the design to conform to any existing class rule, we were considering adding performance-enhancing features like a carbon mast and curved dagger boards. The F16 class and F18 class rules do not allow either of these features.

​After doing some further research into the ISAF requirements and what was possible within this design space, we determined that neither the F16 nor F18 platforms would be ideal within the set ISAF criteria and for Olympic Athlete’s.

​Since no existing design or class fits the ISAF specs, we decided to create an all-new design that is about 17 feet long, called the NACRA17. Compared to an F16 class catamaran, it is 250mm longer, 100mm wider, has a taller mast and more sail area, and curved dagger boards. ​Curved dagger boards are a relatively new technology that is quickly gaining acceptance in catamarans. They have been used mostly on offshore trimarans in the past, and used primarily as a way to increase longitudinal stability and shift underwater center of effort forward to prevent leeward helm downwind.

These trimarans all have center-hull straight dagger boards for upwind sailing. ​In the last few years curved foils have appeared on A Class catamarans, the NACRA F20 Carbon and SL33 catamarans, and some custom and limited production catamarans. All of these designs successfully incorporate constant-curvature dagger boards, commonly referred to as “C foils”. The innovation with the curved foils on catamarans is that they are used to enhance performance for both upwind and downwind sailing. ​Performance improvements with the c-foils have been well documented in the A class catamarans and c-foil equipped boats have won the World Championships for the last several years.

Other foil geometries have been tested on the A Class cats but so far the c-foils have proven to provide the best all-around performance and are by far the most user-friendly and practical solution.

For the NACRA 17 we chose c-foils for the following reasons:

• C foils have proven to make catamarans easier to sail, especially downwind. They provide lift which helps keep the bows up and reduces the tendency to pitch pole. The extra lift generated from the foil helps reduce hull wetted area and markedly reduces hull drag.
• There are other foil geometries that could provide efficient lift but all the ones we evaluated for the NACRA 17 had issues that we determined were not suitable for this type of boat. For instance, L foils are not able to be retracted from the top and would make launching and beaching problematic.We are also not convinced that L foils would be faster on this type of boat. They would certainly create more drag in light air, due to having more wetted area.The windward L board would also need to be lifted to reduce drag and unwanted vertical lift on the windward side, thereby making the boat much harder to tack. C foils can be left down on the windward side since they automatically reduce their vertical lift when on the windward side.
• C-foils make the boat more exciting to sail. The ISAF Olympic Multihull Evaluation Committee report and individual sailor reports confirms this. There is an added dimension of control and speed that can be attained after gaining some experience sailing with them. We believe that this is an area that should be exploited with a modern racing catamaran and is why you see them on the NACRA 17, NACRA F20 Carbon, and SL33 catamarans.The hull shape of the NACRA 17 was designed specifically to work in harmony with the C- foils.You can add lifting foils to conventional catamaran hull shapes, but you will not realize the full benefit of the foils.This fact has been proven in the A Class catamarans and is apparent to those who are designing the next generation of Americas Cup catamarans.The NACRA 17’s new-generation hulls have about 40% greater longitudinal stability than recent conventional shaped catamarans.This increased stability comes without the drag normally associated with creating high longitudinal stability in conventional shapes, and allows the sailors to push the boat much harder downwind.Anyone in the world can become part of the NACRA family and start racing. Simply by starting to contact one of our Nacra dealers and/or distributors spreaded over the world. Just go out and ask for a demo ride on one of these boats to see for your self how cool it is.Nacra, Empowering sailors since 1975

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Pricing Does not include shipping.  Shipping available upon request

Call us for more details and delivery quote at 252-489-3491

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East Coast Sailboats, Inc: 104 Shores Avenue, Point Harbor, NC 27964

Tel: 252-489-3491

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• Nacra F20 Carbon

The ultimate sailing experience

The pinnacle of technical sailing. Unmatched speed on the water. Controlled freestyle fun.

Taking the best from the sailing world, the Nacra F20 Carbon is born out of the capabilities of the hydrofoiling AC50 America’s Cup yachts, designed by Morelli & Melvin, and all the best features and functions of the F18 Infusion.  

This incredible boat is suited for a double crew and is designed for both technical course and inshore/coastal racing. Available with a  Foiling Package , the F20 Carbon is transformed into a true speed demon. You have to see for yourself what it’s capable of.

Usage Technical racing Competitive racing Foiling

Crew 2  Sailors

THE NACRA FAMILY FLAGSHIP

The largest, fastest, most technical and arguably most exciting catamaran in the Nacra family, the Nacra F20 Carbon is hailed as the company’s flagship. Because the construction method’s significant use of strong carbon, it’s lighter than the smaller F18 Infusion despite being larger. Every technical detail is optimized for super fast sailing, both with the standard daggerboards, as well as full hydrofoiling with the Foiling Package.  Made for the

more heavier crews, this boat can take a punch or two. With the choice of multiple light and ultra-strong sailcloth options, the sails will power the F20 Carbon through anything Mother Nature throws at it. And even in low wind conditions you can still get it to foil quite easily. The Nacra F20 Carbon is a recognized World Sailing international competition Class.

Very stiff and very powerful, the Nacra F20 Carbon features carbon fibre epoxy hulls, a fractional sloop rig with a rotating carbon mast, vertical transom, transom-hung rudders controlled by a tiller and come standard with retractable daggerboards, with the option of full carbon fiber L-shaped hydrofoil daggerboards and T-shaped kick-up rudders, unique to the F20 . All in all, this is a beautiful boat capable of blistering speed and a truly thrilling ride in a wide range of conditions.

NEW MATERIALS Unimaginable power – you just need a breeze.  The sail plan for the Nacra F20 Carbon consist of a variety in high aspect carbon infused mainsail and jib configurations – from material to cut to use. A flying crosscut carbon aramid Decksweeper set or a super light Endumax® Foiling set, the choice is yours. Regardless, all our sails are ultimately optimized for incredible speeds and the power needed to fly.

Stronger than steel, its unique physical and chemical structure give Endumax® incredible performance, a very high resistance against tearing and other damages, and against UV-rays. Your Endumax® sails will take your F20 Carbon to the next level, no matter the circumstances.

• Nacra Users & Owners Manual
• Nacra F20 Carbon FCS Owners Manual
• Assembly Manual Nacra 15 / F16 / 17 / F18 / F20
• Nacra F20 Carbon test – Yachts&Yachting Mag

Customize away

You can customize your Nacra F20 Carbon with multiple upgrades and additions to make your catamaran truly yours.

Ready to start flying?

ON SELECTED MODELS

All models outfitted with an Foiling Package ( FCS or   Flight Control System for short ) are ready for full foiling – during your sail, specialized hydrodynamic daggerboards combined with upwards pressure make you get a controlled ‘flight’, meaning your whole boat will be above the water, rather than in it. Make alterations on the water during your flight to find the groove you are looking for and fly over water to leave others behind.

These so-called  Foil sets are designed to fly in a wide range of weather conditions, to make competitive catamaran sailing accessible to even more sailors, and are built to meet the highest safety standards. A real treat for the more, or a little less, experienced sailors.

Using the best possible manufacturing techniques available, we’ve obtained maximum strength with minimum weight using autoclave technology, curing the pre-impregnated carbon/epoxy at 120 degrees Celsius at an atmospheric pressure of 6 bar. It will put you miles ahead of any fleet in terms of performance and joy.

See all Nacra models

Shop all your spare parts and accessories directly from our online store.

Shopping for your business?

Do you order for a sailing school or club, a resort, or do you want to become a Nacra Certified Dealer? Contact Nacra Sailing to apply.

© Nacra Sailing INT. 2024

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Catamarano sportivo da regata 17 Olympic per due persone con trapezio doppio NACRA 17

Caratteristiche

5,25 m (17'02" )

2,6 m (8'06" )

173 kg (381 lb)

16 m² (172,2 ft²)

4,1 m² (44,1 ft²)

17,8 m² (191,6 ft²)

9,15 m (30'00" )

Descrizione

Traduzione automatica   ( Visualizza il testo originale in inglese )

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