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Variants
SB2U-1 - Initial production version, 54 built.
SB2U-2 - 58 built
XSB2U-3 - Single prototype of the extended-range version, converted from SB2U-1.
SB2U-3 - 57 built

SB2U-3 Vindicator on floats on May 9, 1941.
[Source: National Museum Of Naval Aviation]
V-156B-1 - Export version for the British Royal Navy.
Also known as the Chesapeake Mk.I, 50 built.
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SB2U Vindicators of Bombing Squadron (VB) 3 pictured in formation on March 28, 1940.
(Source: U.S. Navy)
Sources:
Wikipedia
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