Vought O2U Corsair - overview version[/heading]
O2U-1 - biplane námoční reconnaissance aircraft with wheel or float landing gear; 132 pcs for the US Navy, 5 pcs for Japan and Canada
O2U-1A - export version for Argentina; 4 pcs
O2U-1D - export version for China, only wheeled chassis; mentioned, 20 and 32 pcs
O2U-1E - export version for Peru, probably the only wheeled; 3 pieces (or 6, mentioned and 12)
O2U-2 - extended upper wing, the grappling hook under the fuselage, slightly modified rudder; 37 pieces
O2U-2A - export version for Brazil, the annular casing of the engine; 6 pcs
O2U-2M - land-based export version for Mexico, allegedly annular engine cover, photos nedoložen; 12 pcs
O2U-3 - wing as the O2U-2, again a modified rudder; 80 pcs
O2U-3A - land-based export version for Cuba; 26 pcs (but probably less)
O2U-3B - export version for Peru; 2 pcs
O2U-3SD - land-based export version for the Dominican republic; 2 pcs
O2U-4 - similar to O2U-3, minor differences; 42 pcs
O2U-4A - mexican license variant, perhaps more than 65 pcs
Development continued on a number of O3U, originally differing only in the shape of wings.
Swanborough, F. G., Bowers, P. M. US Navy Aircraft Since 1912. Putnam Aeronautical Books, London 1990. ISBN 0-85177-838-0.
Johnson, E. R. United States Naval Aviation, 1919-1941. McFarland, Jefferson 2011. ISBN 978-0-7864-4550-9.
Moran, Gerard P. The Corsair and others - aeroplanes Vought 1917-1977. Sunshine House, Terre Haute 1991. ISBN 0-911852-83-2.
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Johnson, E. R. United States Naval Aviation, 1919-1941. McFarland, Jefferson 2011. ISBN 978-0-7864-4550-9.
Moran, Gerard P. The Corsair and others - aeroplanes Vought 1917-1977. Sunshine House, Terre Haute 1991. ISBN 0-911852-83-2.