Back in the 1980s, Italian boatbuilder Riva collaborated with Ferrari for a rather Testarossa-inspired speedboat, but long before that, the House that Enzo Built lent its expertise and 4.5-liter V12 engine to Achille Castoldi to build the hydroplane power boat you see here.
Castoldi was bent on setting a new speed record on the water, and with this spectacular watercraft – dubbed Arno XI – he did just that. The Ferrari-powered vessel hit an astonishing 150.19 miles per hour at Lake Iseo in northern Italy on October 15, 1953. That's mighty impressive in its own right, but what's even more astounding is that the record stands in the 800kg category to this day.
To get there, Ferrari and Castoldi took the same Type 375 4.5-liter V12 engine that powered José Florian Gonzalez to his first grand prix victory at Silverstone, marinized it and fitted two superchargers to crank out more than 600 horsepower.
Now Arno XI is heading to the auction block in Monaco, where RM Auctions expects it will fetch around $1.5 million. Whether you've got that kind of cash or not – and whether or not Monte Carlo is in your travel plans for May – you can pull up alongside it in the gallery of high-resolution studio and archival images above.