File:US Navy Sikorsky HOS-1 in flight in January 1947.jpg
![File:US Navy Sikorsky HOS-1 in flight in January 1947.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/75/US_Navy_Sikorsky_HOS-1_in_flight_in_January_1947.jpg/800px-US_Navy_Sikorsky_HOS-1_in_flight_in_January_1947.jpg?20151007162710)
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