interwar tank (at least one reconditioned Liberty was installed in a BT-5). Demonstration of this tank was witnessed by the British, and Christie's design characteristics were licensed and incorporated into the British A13 design specification. As World War II loomed, Nuffield, producing British cruiser tanks, licensed and re-engineered the Liberty for use in the A13 (produced as the Cruiser Mk III) and later cruiser tanks, with an output of 340 hp (410 hp from the Mark IV version). In later British tanks it was replaced by the Rolls-Royce Meteor, an engine based on the Rolls-Royce Merlin aero engine, which offered greater engine power (600 hp). Nuffield Liberty engines were used in British tanks of immediate pre-war and Second World War: Cruiser Mk III (A13 Mark I) – Nuffield Liberty Mk I Cruiser Mk IV (A13 Mark II) – Nuffield Liberty Mk II Crusader tank – Nuffield Liberty Mk III, IIIA, IIIB, or IV Cavalier tank – Nuffield Liberty Mk IVA Centaur tank – a parallel version of the Meteor-engined Cromwell British World War II tank – Nuffield Liberty Mk V Watercraft HD-4 or Hydrodome number 4 was an early research hydrofoil watercraft developed by the scientist Alexander Graham Bell. In 1919, it set a world marine speed record of powered by two 350 hp Liberty L-12s. Inventor, entrepreneur, and boat racer Gar Wood set a new water speed record of in 1920 in a new twin Liberty V-12 powered boat called Miss America. In the following twelve years, Wood built nine more Packard V-12 driven Miss Americas and broke the record five times, raising it to . He also won five straight powerboat Gold Cup races between 1917 and 1921, and the prestigious Harmsworth Trophy nine times between 1920 and 1933, at the helm of his Miss Americas. Many gentlemen's runabouts, Gold Cup, and other race-winners were built with Liberty L-12 engines. Survivors A number of Liberty engines survive in restored operational and static display vehicles. Displays of the engine itself include: Australia A Liberty 12 from a DH.9A is on display at the Australian Aviation Heritage Centre in Darwin, Northern Territory United Kingdom A Nuffield Liberty is on display at The Tank Museum, Bovington United States A 12A is on display at the New England Air Museum at Bradley International Airport in Windsor Locks, Connecticut. An operable Liberty V-12 on a static test stand trailer is often run for