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Nauta and Reichel-Pugh unveil 47.25 metre sloop

Design

Designed as the flagship of their high performance sailing yacht range, Nauta Design conceived a large 47.25 metre sloop, in co-operation with the renowned naval architects Reichel-Pugh.

Though smaller than Nauta's largest yacht design, the 180 metre Azzam, currently under seatrials in Germany, the Nauta 155 is their largest sailing yacht to date. A preliminary study into the project is in an advanced stage, and was inspired by a client looking for a super performing sailing yacht.

Water lines, appendages and sail plan were developed, as usual in the Reichel-Pugh / Nauta co-operation, by the California based Naval Architect office, while the general design, the outline, the deck and the interior design were developed by the Milan based design firm.

The hull is a last generation fast sailer with a rearward maximum beam. The water plane B max is conventional, not to increase wetted surface. But close-hauling, the boat is taking advantage of all the water line length with a reduced total wet surface. The summed area of the two rudder blades is similar to a single rudder blade one, but the efficiency is much higher since when the boat is leaning, the downwind rudder blade works vertically in a perfect laminar flow, as if the boat were horizontal on her lines.

The final result is an aggressive profile with an extraordinary favourable LOA/Displacement ratio, thanks to high tech pre-preg carbon construction, outputting a light displacement of only 120T in dry conditions. To further improve the performances they adopted the lifting keel solution that allows to improve righting moment for super upwind and reaching performances. The very high aspect ratio of the fin keel will considerably improve its lift and eventually will crucially participate to the high performance of the boat. The VPP is foreseeing a 16.5 knot speed on displacement and up to 26/28 knots on planning attitude.

The style of the boat is defined by a very sleek outline, where the deckhouse profile is kept very low and is fairly hidden by the gunwale, which is 1’2” (35cm) high over the deck, offering a safe foothold when walking in leaning attitude. The gunwale is also 1’ (30cm) thick forming at the same time a practical and comfortable seat while sailing and at anchor, using the handrail as a backrest. Beside the elongated deckhouse windows, lightening the salon, the gunwale profile is cut and lowered for 13’1” (4m) to allow looking outside, and at the same time performing as large scupper for more safety. The deckhouse seems “floating” on the deck thanks to a darker inner spacer splitting it from the deck.

On deck the key point of the boat is the shape and the design of the stern. A wide low platform on the water level becomes a sea lounge for the owner whose master is just linked through an angled glassed companionway with sliding door.

The social life centre of the boat is the outside dining / resting area, easily convertible to the different functions of dining table, coffee tables, sunbathing area, all in the scale of a 155’ flagship.

Nauta Yachts
+39 02 4814317
[email protected]
www.nautayachts.com

Reichel / Pugh Yacht Design
+1 619 223 2299
[email protected]
www.reichel-pugh.com

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