Please select your home edition
Edition
Sea Sure 2021 - RED - LEADERBOARD

America's Cup Rialto: New York launches second AC75

by Richard Gladwell Sail-World NZ 16 Oct 2020 03:55 PDT 15 October 2020
Patriot - American Magic - launching October 16, 2020, America's Cup 36, Auckland © Richard Gladwell / Sail-World.com

Patriot, the first of the second generation AC75's was launched from the American Magic base, in Auckland, around 9.00am local time.

Instead of being a development of what had gone before, the Marcelino Botin led American Magic design team came up with a design which is quite different.

The only similarity to any of the four AC75's previously launched is the small skeg running down the centre of the underside of the hull. That feature was first seen on Italian Challenger Luna Rossa, but on Patriot, as the New York Yacht Club entry has been named, the skeg is a much less significant part of the hull than on the Italian boat.

The most obvious feature on the boat is the flared bow, unusual for a yacht, and it will be interesting to see how it works in action. Emirates Team New Zealand was the first to launch with a bustle running its full length, and the concept does seem to provide a leg-up if the boat drops off the foils, or needs a bit of buoyancy/hull volume to get onto its foils. But Patriot is quite different and there is not a lot of volume in the skeg. From the foil-trial video it seems as though forward section of the hull itself, will do any heavy lifting required.

Botin describes the hull shape as "being a continuation of the rig and the sail plan. What you are trying to achieve with the hull is to maximise the driving force of the rig and sail plan and minimise the heeling moment. It's as simple or complicated as that', he adds.

"We have a very interesting platform to start working with."

As for the flared bow Botin says again that is "just maximising driving force and minimising heeling. The bow shape and indeed the whole boat is guided towards that one objective."

The hull is very deceptive, and seems to change depending on the viewing perspective. Looking forward from the stern quarter the eye is drawn to the flare in the bow, which in profile appears to almost be a clipper bow. Looked at from the reciprocal direction the bow looks to be a completely different shape - with no flare, and the bow sections appear to be flat - and the hull shape generally appears to be very simple, refined and easy on the eye.

The transom and stern sections are very shallow and almost dinghy like, and the centre line skeg becomes so fine that it gets lost before it reaches the stern.

Of course the key point is that if the hull of an AC75 is in the water, then it is not going to be winning races. It was apparent from watching Emirates Team New Zealand's Te Aihe sail over the past two or three weeks that it is quite possible to sail several legs without the hull making contact with the surface of the water. And like with the AC50's the AC75's will have to sail dry laps.

While it may not have always been caught on the TV camera, on the water in Bermuda it was obvious that a competitor doing anything other than a soft and fleeting touchdown was dropping margin on their opponent. That was time they could only get back by getting out of phase with the race leader and getting a lift, or more pressure, or both.

The AC75's from what we've seen don't look to be a whole lot different.

From the video of the towing test on Friday afternoon, the Patriot design package becomes more clear - with the hull riding bow down for reduced windage, and forward section of the the underside of the hull sitting just clear of the water, and hopefully able to lift the hull back into proper trim if it does make contact with the surface.

Above the waterline, Patriot looks to be a very interesting design. The deck height peaks at the base of the mast and drops down to the bow and almost right away at the transom.

There are two crew trenches either side which are an elongated teardrop shape and well defined. Botin and his design team have gone away from the open cockpit layout of Defiant.

The trenches look to be deep with two winch grinding stations in each trench ahead of the steering position. The crew should be well protected in the event of a sudden nosedive, or some similar excitement. That was certainly the case on their first ever sail when the AC75 performed like a frisky dolphin, leaping clear of the water as a result of a foil control system snafu, before diving bow first into the Waitemata Harbour.

It would seem that like on Te Aihe two or three of the crew will cross the boat after each tack or gybe, and there is a big area of non-skid fore and aft of the mainsheet traveller.

Sailing trials are expected to start in earnest early next week.

















Related Articles

America's Cup: Spanish ratchet up Cup stakes
America's Cup: Valencia comes up with innovative hosting approach Backers of Valencia's bid to stage the 37th America's Cup believe they can access a €750 billion fund established by the European Union to assist member countries to recover from the economic effects of the COVID pandemic. Posted on 18 Jun
Valencia in this mix to host 37th America's Cup
Existing, ready-for-use, tailored infrastructures and previous hosting experience Valencia's successful history in hosting the America's Cup, its existing, ready-for-use, tailored infrastructures made positioning Valencia's as potential host for the next event obvious. Posted on 18 Jun
America's Cup: NZ Govt confirm $100m declined
Kiwi Government confirm ETNZ Board has said "Thanks, but no thanks". The Minister responsible for the America's Cup has confirmed the joint Crown-Auckland Council offer to host the next regatta has been declined by the Board of Team New Zealand. Posted on 15 Jun
America's Cup: Steady hand on helm at Briefing
“The writing is on the wall” for a Cup defence in Auckland - reaction from RNZYS Members Briefing The America's Cup briefing for Royal New Zealand Yacht Squadron members only, turned into a rather low-key affair, with no major announcements. Posted on 15 Jun
America's Cup set to go offshore until COVID fades
A traditional America's Cup defence is not expected to be conducted in Auckland until COVID fades On Thursday, the 90 days "good faith" negotiation period ends for Auckland to be Host Venue of the 37th America's Cup. The outcome is expected to be that a traditional America's Cup defence will not be conducted in Auckland. Posted on 15 Jun
Team NZ Board Chair hits back at fake media claims
Tindall responds angrily to claims he is offside with the team's plans for its fourth Cup Defence. Sir Stephen Tindall, the recently resigned Chairman of the Board of Team New Zealand has responded angrily to media claims that his retirement is "proof positive" he is offside with the team's plans to go offshore for its fourth Cup Defence. Posted on 14 Jun
Suzanne McFadden wins supreme sports award
Suzanne McFadden has been instrumental in the upsurge in coverage of women's sport Leading America's Cup correspondent, Suzanne McFadden has been instrumental in the upsurge in coverage of women's sport in this country and was recently named New Zealand sport journalist of the year. She looks back at her career in this podcast with YNZ. Posted on 14 Jun
Brad Butterworth on winning four America's Cups
Shirley Robertson's talks with one of the most successful tacticians of the modern era From the America's Cup to the Whitbread, the Admirals Cup to the Sydney Hobart, NZ's Brad Butterworth has been at the sharp end of competitive sailing for his entire adult life, and has a grand prix sailing CV few could match. Posted on 9 Jun
America's Cup: Board Chairman Tindall exits ETNZ
Sir Stephen Tindall is retiring as Chairman and Director of the Board of Emirates Team Sir Stephen Tindall is retiring as Chairman and Director of the Board of Emirates Team New Zealand after a long and successful tenure as Director of the four times America's Cup winning team. Posted on 4 Jun
Cup holders tightlipped on $100m package rejection
Emirates Team NZ have refused to comment specifically on media reports of a $100million package clai Emirates Team NZ have refused to comment specifically on media reports of a $100million package claimed to have been rejected by the team. In a later story the Auckland Mayor has elaborated on the previously unattributed claims. Posted on 2 Jun
Rooster 2020 - Impact BA - FOOTERHella Dual Colour Floodlights - 728 x 90px - 6 jpg BottomMcConaghy Boats 2021 - FOOTER