The OS2U Kingfishers were used by Argentina (9), Australia (24), Britain (100), Chile (15), Dominican Republic (3), Mexico (6), Uruguay (6), and the United States.
In August 1940 the USS Colorado received the first OS2U-1.
United States Navy's Standard
The Kingfisher was the standard floatplane deployed by the United States Navy either by inshore bases or launched by catapult from ships at sea. It participated in all theaters of operation.
The OS2U Kingfisher was also used for artillery spotting, dive bombing, air sea rescue, anti submarine, and liaison roles.