This one-off, record-holding boat has a Ferrari race engine and a $12 million price tag — see the 1952 Arno XI

DuPont Registry1952 Ferrari Arno XI Racing Boat.
  • The 1952 Ferrari Arno XI is a record-holding race boat that uses the engine from a Ferrari Formula One race car.
  • It currently still holds the world record in the flying kilometre, according to its sale listing at DuPont Registry.
  • The Arno XI is for sale for $US12 million.
  • Visit Business Insider’s homepage for more stories.

Here’s a boat that you’ve probably never heard of before, or seen in even your most bizarre dreams: the 1952 Ferrari Arno XI. Yes, it’s real. And yes, it’s for sale.

Built to break the world speed record on water, it was proposed by Italian maritime racer Achille Castoldi, according to the listing on DuPont Registry. The boat uses a twin-supercharged, race-prepared engine out of a Ferrari Formula One race car.

The DuPont listing doesn’t include the price of the Arno XI, but a representative for the seller told Business Insider they’re asking $US12 million.

Keep reading to see more of the Arno XI.


The 1952 Ferrari Arno XI is a racing boat built to break world speed records on the water. It’s now up for sale.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

Achille Castoldi, an Italian maritime racer, proposed the idea to Enzo Ferrari himself. Ferrari said yes.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

Castoldi commissioned a hardwood, three-point hydroplane with a mahogany veneer covering it.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

The upper body was painted in Ferrari red. Enzo Ferrari sent the Scuderia Formula One team to help with the engine.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

Enzo Ferrari had his chief engineer, Stefano Meazza, put the 4.5-litre V12 engine from their Formula One race car into the boat.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

To make extra power, two superchargers were installed.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

After the race tune, the engine could make between 550 and 600 horsepower.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

The Arno XI set a world record in the flying kilometre at 150.49 mph.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

The record still stands today, its sale listing said.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

The listing mentions that because it is the only boat to ever have Scuderia Ferrari power, it’s being completely restored by Ferrari’s restoration arm, Ferrari Classiche.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

In its retirement, the boat spends time at shows and doing parade laps.

Michael Shaffer/Subaru1952 Ferrari Arno XI Racing Boat.

Recently, it appeared at the 2019 Goodwood Revival, a racing festival held every year in the UK.

Michael Shaffer/Subaru1952 Ferrari Arno XI Racing Boat.

Guests there were invited to take an up-close and personal look at the Arno XI.

Michael Shaffer/Subaru1952 Ferrari Arno XI Racing Boat.

It is striking in person.

Michael Shaffer/Subaru1952 Ferrari Arno XI Racing Boat.

The Arno XI is listed for sale on DuPont Registry. Its asking price is $US12 million.

DuPont Registry1952 Ferrari Arno XI Racing Boat.

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