Please select your home edition
Edition
2024 fill-in (top)

RP-Nauta 151' takes shape combining the 4 sailing elements: speed, safety, strength and silence

by Nauta Design 1 Apr 2021 02:32 PDT
RP-Nauta 151' © Sand People

Speed, safety, strength and silence: these 4 elements are at the core of the R/P-NAUTA 151', a one-off, bluewater performance sloop with general concept by Nauta Design in build at the Royal Huisman shipyard.

"Combining comfort and safety to explore the world with an extremely lightweight yacht that was competitive in superyacht regattas wasn't an easy task," says Mario Pedol, co-founder of Nauta Design in Milan. "The owner wanted a solid, autonomous and safe yacht that was also efficient and modern with a powerful sail plan." The request came from a repeat client for whom Nauta had previously designed a 34-metre sailing yacht based on a broadly similar brief. The owner was assisted as for the previous time by highly experienced MCM's Nigel Ingram as Owner's Representative.

"Working for a repeat client is always very gratifying" says Nigel Ingram "and on this occasion especially so as not only MCM but also Nauta and Reichel/Pugh, all of whom worked on the previous project, received the call from this very experienced client. A strong team to work with Royal Huisman on this very special project."

This time the owner was ready to step up in size to 46 metres, but he wanted to retain the spirit of his former yacht, including the deckhouse design.

"The deckhouse is essential as it allows to look outside and see the sea while seated in the main salon," says Massimo Gino, Nauta Design co-founder and partner.

Although carbon fibre construction was considered early on in the project, the design team eventually opted for an aluminium project that could still provide high performance but combined with robustness and acoustic comfort for extended bluewater sailing.

"I started thinking that an aluminium hull weighs 60-70% more than a carbon boat, but the weight of the hull and deck is only about 15% of the total weight of a sailing yacht," says Pedol. "Our early intuition was that an aluminium construction sailing yacht could be much lighter than the existing aluminium fleet. Royal Huisman supported this vision with enthusiasm and accepted the challenging target of building a light displacement yacht. Extensive research work and calculations, confirmed our initial thought."

To ensure optimal performance longstanding Nauta partners Reichel/Pugh were selected by the client for the naval architecture. Reichel/Pugh designed and managed a Computational Fluid Dynamics (CFD) study bringing in America's Cup CFD specialists Caponnetto Hueber and Giorgio Provinciali for the Velocity Prediction Program (VPP) performance analysis. This was a comprehensive hull design study to improve the sea-keeping and motion both motoring and sailing at various speeds and heel angles in different wave conditions, while also improving real and ORCsy rated performance.

Reichel/Pugh ultimately tested 12 models before development of the final hull shape. The VPP results indicate that in 10 knots of breeze the R/P-Nauta 151 will sail upwind under mainsail and jib with a boat speed of almost 13 knots and nearly 18 knots when reaching at a wind angle of 90 degrees in a 15 knot breeze.

The exterior profile is defined by the unobtrusive deckhouse that blends gracefully with the austere sheer line. Royal Huisman have embraced Nauta's bid to make the yacht as light as possible by blending aluminium with carbon composite construction. The deckhouse, guest cockpit and hardtop are all in carbon fibre by Rondal, Royal Huisman's sister company, who are also building the Panamax carbon mast, boom and the yacht's integrated sail handling system.

The exterior profile is defined by the unobtrusive deckhouse that blends gracefully with the austere sheer line. Royal Huisman have embraced Nauta's bid to make the yacht as light as possible by blending aluminium with carbon composite construction. The deckhouse, guest cockpit and hardtop are all in carbon fibre by Rondal, Royal Huisman's sister company, who are also building the Panamax carbon mast, boom and the yacht's integrated sail handling system.

The deck features three welcoming and functional guest social areas:

  • The wide transom of almost 10 metres includes a hinged section of the teak aft deck that folds out hydraulically in a single movement to rest on top of the beach platform, revealing an elegant staircase that can be raised for launching the crew tender. The aft section further includes two facing sun loungers with L-shaped backrests for viewing aft or athwartships when sailing, an aft facing sofa and a folding coffee table in front of it. The raised aft bulwarks can be used for seating. Two steps lead to the crew companion hatch and the double helm positions.

  • The guest cockpit is shaded by the carbon composite hardtop that can be removed in racing mode. There are another two sun loungers with adjustable backrests depending on the direction of heel, a full-size dining table to port and two coffee tables to starboard, both with sofa seating. Unusually, the curved windscreen has three opening sections to provide a through breeze into the cockpit.

  • The foredeck features a partially recessed carbon bay for the guest tender that converts into a cozy cockpit with hi-lo table and fitted cushions. Both the forward cockpit and the aft beach club can be covered by awnings supported on carbon fibre poles.

  • Below deck is a spacious dining area and comfortable lounge under the deckhouse, a full-beam master stateroom forward, three guest cabins, and the crew quarters and galley aft.

For easy handling, the sail operations are governed by weight optimized Rondal captive winches for sheets and mainsail halyard. The running backstays are tensioned by Cariboni Magic Trims on both sides and the synchronized retrievers have their own captive winches.

This automatic system allows to sail at all times, even in cruising mode, with the powerful square top mainsail up, to give the Owner unforgettable sailing experience!

Related Articles

Road To Gold: Q&A this Monday with Luke Patience
The Flying Scotsman wears his heart on his sleeve Most professional athletes play their emotional cards close to their chest. But not Luke Patience. The Flying Scotsman wears his heart on his sleeve, which is why the next Road To Gold Q&A will be a must-see. Posted today at 10:19 am
JJ Giltinan Championship Day 1
One of the best 18ft skiff races seen on the harbour for several seasons Race 1 of the Winnings 2024 JJ Giltinan Championship set the regatta off on the highest possible note on Sydney Harbour today with one of the best 18ft skiff races seen on the harbour for several seasons. Posted today at 8:19 am
2024 Puerto Vallarta Race overall
Roy Disney's Pyewacket takes the win A lot of sailors would suggest that it's 'when' you start that matters -- the earlier the better. Others would insist that it's the weather on your start day that matters most, the windier the better. Posted today at 2:44 am
Cup Spy Feb 29: Intense racing practice
Three teams sailed in Cagliari and Barcelona, in varying forms of contested race practice Three teams sailed again in Cagliari and Barcelona, in a rinse and repeat of the sessions earlier in the week. The pressure was applied in various ways as the teams went through their routines. Posted today at 1:51 am
Optiorange 2024 at Valencia day 2
Qualifying series codes with Greek Panagopoulos leading overall The wind has conditioned this second day, with only one race completed but allowing the final series to start with the 102 best in the gold group. Posted on 1 Mar
Waiting for the “second winner” of the GSC
Ready to welcome Cole Brauer on First Light After the first to cross the finish line of the Global Solo Challenge, French Philippe Delamare on Mowgli, we're getting ready to welcome the second winner, the young Ms. Cole Brauer on First Light. Let me explain. Posted on 1 Mar
470 Worlds in Llucmajor, Mallorca Day 4
Two race wins for Simon Diesch and Anna Markfort Two race wins for Simon Diesch and Anna Markfort have moved the Germans into second place and just four points off the Japanese leaders after a breezier day at the 470 World Championship in Mallorca. Posted on 1 Mar
44Cup Calero Marinas day 2
Maxing out the wind conditions For some time the Lanzarote forecast for day two of the 44Cup Calero Marinas showed conditions exceeding the RC44 class' theoretical upper wind limit of 25 knots. Anticipating this PRO Maria Torrijo brought the start time forward to 09:30. Posted on 1 Mar
2024 Rolex Middle Sea Race open for entries
The 45th edition of the 606 nautical mile offshore classic starts on 19th October The Royal Malta Yacht Club is pleased to announce that the Notice of Race for the 2024 Rolex Middle Sea Race has been published today and the online race management system is ready to accept entry applications. Posted on 1 Mar
Ocean Globe Race fleet busy in Punta del Este
Arrival receptions, Q&As, briefings, maintenance and safety inspections crammed into crew's schedule The sunny coastal resort of Punta del Este, Uruguay is abuzz with busy OGR crew juggling their yacht and social commitments. Posted on 1 Mar
RS Sailing 2021 - FOOTERVaikobi 2024 Sale - FOOTERRooster 2023 - Aquafleece - FOOTER