Aircraft Carrier Advanced Training

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In the early 1940s the US Navy trained their pilots on the Great Lakes. The US converted two sidewheel steamships - The USS Sable and the USS Wolverine - into aircraft carriers.
The USS Sable, originally built as the 'Greater Buffalo', a sidewheel excursion steamer, was converted in 1942 to a freshwater aircraft carrier. She was used for advanced training for naval aviators in carrier takeoffs and landings.
(via Neatorama)