504 with an extra wing. Two were built, of which the first flew in 1920. It was sold to Queensland and Northern Territory Aerial Services but proved unsuited to the tough conditions in the Australian Outback. Britain's only triplane contribution to the maritime arena was the Felixstowe Fury prototype of 1918, also known as the Porte Super-Baby. Almost as late as the Barling Bomber, in 1922 the Japanese flew the Mitsubishi 1MT torpedo bomber. It entered production as the Navy Type 10. The racing triplanes After World War I, several examples of the Curtiss 18-T were used for racing. An 18T-2 nearly won the Curtiss Marine Trophy Race in 1922 (limited to U.S. Navy pilots), but pilot Sandy Sanderson ran out of fuel just before the finish line. In 1921 the "Cactus Kitten" racing triplane was created by modifying the "Texas Wildcat 2" biplane (which in turn was a modification of the monoplane "Texas Wildcat" monoplane), thus becoming the only design in history to have gone from monoplane to biplane to triplane configuration. Also referred to as the Curtiss-Cox racer, being designed and sponsored by Cox from Texas and powered by a Curtiss C-12 engine, the Cactus Kitten had a wingspan of . In the 1922 Pulitzer race it came 2nd behind a Curtiss biplane. In its triplane configuration it surpassed its monoplane and biplane antecedents in handling and speed and, for a brief period in 1922, the triplane was once again being noticed with the Kitten being touted as the world's fastest plane and being capable of surpassing 200 miles per hour. The same year it was donated to the Navy and used as a trainer for the 1922 Pulitzer race, fame having proven very fleeting. In 1927 a Catron & Fisk CF-10 twin-engined 22-seat airliner was modified with additional fuel tanks and updated engines and named the Pride of Los Angeles. The intention was to enter the Dole Air race, but an in-flight incident caused the aircraft to crash before the race started. Private aviation Some triplanes have been developed for private use. Perhaps the most unusual was the 1917 Curtiss Autoplane, a triplane flying car. The same year, the more conventional Curtiss-Judson Triplane, a one-off and slightly enlarged triplane variant of the Curtiss Model F, was sold for private use. After the war, in France the Besson H-3 private tourer flew in 1921. And in 1923 the