Vought V-156 / SB2U Vindicator / Chesapeake
The Vought V-156 / SB2U was designed to meet a US Navy requirement for a carrier- aircraft based scout-bomber and first flew in 1936. At the time it represented a major leap forward, being the first low wing monoplane to have both foldable wings and retractable undercarriage in US Navy service. Such were Navy concerns at the time, that Vought was asked to develop a competing biplane scout-bomber - the XSB3U-1 - as 'insurance'.
Powered by a 825hp (615kW) Pratt & Whitney R-1535 Twin Wasp Junior, the SB2U was ordered into production as the Vindicator, with 169 being built in three versions.
Vindicators saw action during the Battle of Midway in 1942, but after this were retired to second line duties.
Orders for a version for the French Air Force - the V-156B - were partially met before the fall of France. Fifty V-156B-1s were ordered by the British Fleet Air Arm and entered service as the Chesapeake I advanced trainers.