How Fast Is Speedboat?

Speedboat cruisers run at 180 km/h. The official water speed record is 511 km/h — set by Spirit of Australia in 1978, and unbroken nearly 50 years later despite repeated attempts at the record.

Spirit of Australia, the water speed record holder, was built by Ken Warby in his suburban Sydney backyard with a borrowed jet engine.

• Faster than a cheetah sprinting
• Record from 1978 still unbroken