– Oct 26th 2026

W​​​​​​hat does it take to design a yacht capable of winning the Admiral’s Cup? With the event demanding excellence in both inshore and offshore racing, the challenge is driving a new generation of high-performance IRC raceboats.

In the November issue of Seahorse Magazine, Adolfo Carrau shares the thinking behind designing the next generation of high-performance IRC raceboats ahead of the Admiral’s Cup 2027.

Can one design truly master every discipline?

The next edition of the Admiral’s Cup will take place in Cowes during July 2027 after a triumphant return in 2025. Organised by the Royal Ocean Racing Club, the event challenges teams in a combination of inshore and offshore racing, concluding with the Rolex Fastnet Race

Botin Partners made a significant impact on the 2025 edition, with six Botin-designed yachts competing in the event.

The return of the Admiral’s Cup is shaping a new generation of all-round IRC raceboats designed and optimised specifically to win the 2027 edition. The challenge is to build on that experience and develop boats capable of delivering exceptional performance across one of sailing’s most demanding programmes.

Entries for the 2027 Admiral’s Cup only opened a month ago but eight boats are already entered with confirmed teams from the Bayview Yacht Club in the USA, Yacht Club Costa Smeralda in Italy and the Royal Ocean Racing Club in Great Britain. Six of the eight boats come from the design board of Botin Partners:

AC Class 1
AC Class 2

Can one design truly master every discipline?

The programme combines short windward-leeward races in the Solent, a coastal race, the Channel Race and the 700-mile Rolex Fastnet Race. That combination rules out easy answers. Raw speed alone is not enough. A boat that is devastating in one condition but vulnerable everywhere else could lose the series in a single, heavily weighted offshore race. Conversely, a conservative platform may avoid disaster but lack the pace required to win at the top level. The challenge is to find the broadest useful performance envelope without diluting the qualities that make the boat genuinely fast.

For Carrau, the answer begins with versatility. With racing ranging from short, tactical windward-leeward courses in the Solent to the Channel Race and the 700-mile Rolex Fastnet Race, the ideal yacht must perform across a wide range of conditions. With the Fastnet carrying triple points, designing for a single mode of sailing simply isn’t enough.

Carrau explains how Botin Partners approaches this challenge by first establishing the requirements for offshore performance: structural strength, watertight integrity and efficiency in demanding North Atlantic conditions. Hull-volume distribution, bow shape, deck layout and the positioning of onboard systems all contribute to a platform designed to perform over long distances at sea.

The next challenge is to combine these offshore qualities with the acceleration, manoeuvrability and tactical performance required for inshore racing. Drawing on Botin Partners’ experience in grand prix sailing, Carrau highlights the importance of creating a yacht that can compete around the buoys without sacrificing its offshore capabilities.

Only then is the inshore requirement folded into the design. Botin Partners draws on a deep database of grand prix inshore racers to ensure the same boat can accelerate, tack and manoeuvre competitively in short-course Solent conditions. Most races will begin upwind, while opportunities to overtake downwind may be limited, so a boat that gives away too much at the start or through repeated manoeuvres could spend the entire race trying to recover.

IRC optimisation is integrated into that process rather than allowed to dictate it. Carrau knows the rule intimately as he contributes as a member of the RORC technical sub-committee, but he is wary of exploiting a loophole that creates a one-mode boat. Interceptor trim tabs, twin rudders, water ballast and different rig combinations are judged by whether they preserve performance across a wide crossover, not by whether they deliver one spectacular “hero” mode.

THE BOTIN CUP41′

A collaboration between Botin Partners and McConaghy Boats, the Botin Cup41′ focuses on a solution for the small boat class at the 2027 Admirals, Sardinia and Australia Cup Regattas.

Optimized for IRC, the Botin Cup41′ is a masterclass in refined performance. Each yacht is delivered as a fully integrated, factory-optimized platform, providing a cohesive, ready-to-race package requiring only sails and electronics.

At its core, quite simply the concept is to deliver a platform capable of winning at the highest level of offshore and inshore competition. The modern ‘Admiral’s Cup style regattas demand versatility, reliability and outright speed across varied conditions, and this new design has been developed with those exact performance parameters in mind.

The rating must make sense, but only in the service of a fast and honest boat. The danger is a narrow performance window: first when the conditions are perfect, last when they are not. With the Fastnet weighted three times and no discard, that is not a viable Admiral’s Cup strategy.

Carrau’s position is progressive rather than conservative. Botin Partners is prepared to push new hull families beyond what older boats can achieve, but not at the expense of versatility. The design must remain competitive through any realistic mix of wind strength and sea state the Admiral’s Cup can produce.

The campaign is part of the design

The theoretically fastest boat will not necessarily be the strongest Admiral’s Cup campaign. Crew quality, training time, sail development, calibration, reliability and shore preparation will determine how much of the design’s potential can actually be used.

This matters particularly for a complex or unfamiliar platform. The broader the crew’s understanding of the boat’s modes, the more consistently it can be sailed close to its numbers. A radical concept with a fully developed team may be formidable; the same boat with limited preparation could be exposed by the relentless variety of the programme.

The design brief must therefore include the people who will sail, maintain and develop the boat. Systems that look efficient on a drawing must still work at 0300 in the Celtic Sea, in a crowded prestart and after days of offshore fatigue.

Alongside Carrau’s perspective, Seahorse Magazine brings together insights from designer Sam Manuard, IRC Director of Rating Jason Smithwick and yacht broker Sam Pearson to examine the wider design debate and the evolving market for competitive Admiral’s Cup yachts.

Read more: Seahorse Magazine, November 2026