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Aston Martin fleet week: Next vessel to sail is a luxury submarine

Aston Martin's latest project aims to go beneath the surface, literally. It announced Thursday a partnership with a Florida-based developer of submersibles to develop a strictly limited-edition, deep-diving submarine code-named Project Neptune. The luxury brand is apparently making quite a splash at the Monaco Boat Show this week, having just revealed the AM37, a 37-foot, six-passenger, two-crew-member speedboat replete with natural teak sliding decks and custom-outfitted interior that will cost $1.6 million. For Project Neptune, the British marque is joining forces with Triton Submarines, which makes luxury submarines for superyacht-owning hobbyists as well as more robust models for scientists and filmmakers that are capable of exploring the deepest parts of the ocean. Plans call for marrying Triton's Low Profile three-person platform with the automotive brand's design and engineering language, under the direction of its Chief Creative Officer, Marek Reichman. Aston Martin Consulting will oversee the project. No details yet, but Triton's existing 1650 Low Profile three-person sub, its lightest model, weighs 8,800 pounds and can dive to 1,650 feet. A 30 kWh battery powers four 5-horse thrusters, and it can stay submerged for up to 12 hours. The most dramatic part of Triton's design is its incredible bubble shape — a spherical, transparent pressure hull. Some of Triton's more rigorous designs can reach depths of 7,500 feet. A Triton sub reportedly starts at a cool $3.3 million, and it's certainly nice, with stitched leather seats. But that, of course is a crude version compared with Aston Martin's panache and uber-exclusive materials. Pass the caviar, won't you, old boy? Related Video: Weird Car News Aston Martin Luxury submersible

Cosworth briefly crows that Aston Valkyrie's 6.5L V12 has record horsepower

It's only natural that Cosworth would want the world to know that it's building the world's most powerful naturally-aspirated engine for the Aston Martin Valkyrie and Valkyrie AMR Pro. The timing of when the world should know about it, that's at issue. Yesterday the English engine maker's official Twitter account posted a picture of the barely-there coupe and the line, "We're famous for breaking records and our latest engine, the Aston Martin Valkyrie 6.5-litre V12, will be the world's most powerful naturally aspirated road engine with 1,130bhp." Two tags accompanied the post, #Cosworth and #AstonMartinValkyrie. About 90 minutes later, the tweet disappeared. The likely issue is that Cosworth got ahead of Aston Martin's official confirmation of Valkyrie outputs, something we're more used to from patent offices and Chinese model makers. The question is what output is Cosworth really talking about, and which car. All of last year, however, various reports had the street-legal Valkyrie making 1,130 hp. A Road & Track report attributed "nearly 1,000 hp" coming from the NA V12, the remaining 130 from a kinetic energy recovery system working the front axle. Hence, we're not sure if Cosworth's talking about its own engine alone at 1,130 hp, or its engine with the KERS. But then there's this: At the launch of the Valkyrie AMR Pro during the Geneva Motor Show this year, Aston Martin said the track-only Valkyrie AMR Pro would enjoy "a combined power output of more than 1100 bhp — more than the Valkyrie road car and a figure than comfortably exceeds the magic 1:1 power-to-weight ratio." The truth's a mystery for now, which is just as Aston Martin would want it. If Cosworth's engine really does make 1,130 hp on its own, that would be monstrous, and it would mean the automaker's been playing a serious game of English understatement. Even if Cosworth included the hybrid help, however, an NA V12 with 1,000 ponies would take the crown. The only competition is the 6.5-liter V12 in the Ferrari 812 Superfast, and that's 211 horses adrift. The quad-digit figures expected from Mercedes-AMG Project One and McLaren Speedtail require turbochargers, as does the just-teased V8 going into the Shelby Tuatara. With the first of 150 Valkyrie road car deliveries scheduled for next year, we probably don't have that much longer to wait to find out. Related Video:

Aston Martin DB11 arrives with 600 horsepower, stunning design

The drapes have been removed from the new DB11, billed by Andy Palmer, Aston Martin's chief executive, as "not only the most important car that Aston Martin has launched in recent history, but also in its 103-year existence." Well, they all are, Andy. Aston Martin is such a small company that it bets the farm with each new model. That's part of its appeal, for Aston's one constant is the svelte beauty of its cars, which (lest we forget) are the company wheels for one Commander James Bond. So the DB11 is important, make no mistake. It goes on sale this autumn and will cost $211,995 in the US. It's the tenth car (there was no DB8) in a lineage that began in 1948 with the DB1 – the first car to bear the initials of then owner, David Brown. Just 15 DB1s were made, but the DB line has been the most successful model for Aston Martin over the years, including such cars as the DB5 and DB7 as well as the 2003 DB9, which was the last all-new Aston Martin. This totally new DB11 is a clean-sheet approach from design director Marek Reichman, with a new aluminum bodyshell, suspension, cabin, and a Mercedes-Benz-based electronic architecture, which runs the systems. View 24 Photos To save fuel the engine will close down one bank and run as a 2.6-liter straight-six when the extra power is not required. The heart is a brand-new, 5.2-liter V12 boosted with two Mitsubishi Heavy Industries twin-scroll turbochargers with water-to-air inlet-charge coolers. It punches out 600 horsepower at 6,500 rpm and 516 pound-feet of torque from 1,500 rpm. Maximum speed is said to be 200 miles per hour with 0-62 acceleration in 3.9 seconds. The new engine drives the rear wheels via a ZF eight-speed automatic transmission and a mechanical limited-slip differential. Aston moved from the previous 6.0-liter naturally aspirated unit to a 5.2-liter biturbo to improve the part-load efficiency and EPA fuel economy figures. "In downsizing we want the emissions and we want the economy, but more than those, we want the torque," says Ian Minards, director of product development. To save fuel the engine will close down one bank and run as a 2.6-liter straight-six when the extra power is not required, but to prevent the exhaust catalyst from overcooling, the electronics switch between two banks. "It's undetectable," says Minards. Minards' team spent three years creating this car. "It's been a little bit daunting," he says.