While the OS2U-1 was proving itself, Vought introduced the OS2U-2, which had the R-985-50 P&W Wasp Junior engine.

One-hundred-fifty-eight of these aircraft were delivered in 1940-41, the first models to be known officially as “Kingfishers.”  Forty-five aircraft were delivered with float-type landing gear and 73 with land-type landing gear.

OS2U:

Engineering Triumph and War Time Hero
Fisher of Men
One Kingfisher Saves Ten Men