MACCI CASTOLDI MC-72 FLOAT PLANE (SEAPLANE)

441 mph (709 km) in 1931- still the worlds record for a propeller seaplane.

Two 12 cylinder engines, the shaft of the rear engine driving the front propeller through the hollow shaft of the front engine.

Can you imagine the sound in an open cockpit?

What a gorgeous aircraft!

Complete story of setting the seaplane speed record