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

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This one-off, record-holding boat has a Ferrari race engine and a $12 million price tag — see the 1952 Arno XI
  • 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 kilometer, according to its sale listing at DuPont Registry.
  • The Arno XI is for sale for $12 million.

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 $12 million.

Keep reading to see more of the Arno XI.

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

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

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

Achille Castoldi, an Italian maritime racer, proposed the idea to Enzo Ferrari himself. Ferrari said yes.
1952 Ferrari Arno XI Racing Boat. DuPont Registry
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Castoldi commissioned a hardwood, three-point hydroplane with a mahogany veneer covering it.

Castoldi commissioned a hardwood, three-point hydroplane with a mahogany veneer covering it.
1952 Ferrari Arno XI Racing Boat. DuPont Registry

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

The upper body was painted in Ferrari red. Enzo Ferrari sent the Scuderia Formula One team to help with the engine.
1952 Ferrari Arno XI Racing Boat. DuPont Registry
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Enzo Ferrari had his chief engineer, Stefano Meazza, put the 4.5-liter V12 engine from their Formula One race car into the boat.

Enzo Ferrari had his chief engineer, Stefano Meazza, put the 4.5-liter V12 engine from their Formula One race car into the boat.
1952 Ferrari Arno XI Racing Boat. DuPont Registry

To make extra power, two superchargers were installed.

To make extra power, two superchargers were installed.
1952 Ferrari Arno XI Racing Boat. DuPont Registry
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After the race tune, the engine could make between 550 and 600 horsepower.

After the race tune, the engine could make between 550 and 600 horsepower.
1952 Ferrari Arno XI Racing Boat. DuPont Registry

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

The Arno XI set a world record in the flying kilometer at 150.49 mph.
1952 Ferrari Arno XI Racing Boat. DuPont Registry
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The record still stands today, its sale listing said.

The record still stands today, its sale listing said.
1952 Ferrari Arno XI Racing Boat. DuPont Registry

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.

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.
1952 Ferrari Arno XI Racing Boat. DuPont Registry
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In its retirement, the boat spends time at shows and doing parade laps.

In its retirement, the boat spends time at shows and doing parade laps.
1952 Ferrari Arno XI Racing Boat. Michael Shaffer/Subaru

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

Recently, it appeared at the 2019 Goodwood Revival, a racing festival held every year in the UK.
1952 Ferrari Arno XI Racing Boat. Michael Shaffer/Subaru
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Guests there were invited to take an up-close and personal look at the Arno XI.

Guests there were invited to take an up-close and personal look at the Arno XI.
1952 Ferrari Arno XI Racing Boat. Michael Shaffer/Subaru

It is striking in person.

It is striking in person.
1952 Ferrari Arno XI Racing Boat. Michael Shaffer/Subaru
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The Arno XI is listed for sale on DuPont Registry. Its asking price is $12 million.

The Arno XI is listed for sale on DuPont Registry. Its asking price is $12 million.
1952 Ferrari Arno XI Racing Boat. DuPont Registry