United States of America - Vought V-156 B Chesapeake

XSB2U-1  Single prototype, powered by a 750hp R-1535-78 engine.
SB2U-1     Initial production version powered by a 825hp R-1535-96 engine, 54 built.
SB2U-2     Same as SB2U-1 but with minor equipment changed, 58 built.
XSB2U-3  Single prototype of the extended-range version with twin floats, converted from the SB2U-1.
SB2U-3    Similar to the SB2U-2 but fitted with a 825hp R-1535-102 engine, crew armour and two 0.5in guns, 57 built
V-156F-3  Export version for the French Navy, 40 built.
V-156B-1  Export version similar to the SB2U-3 and powered by a 750hp R-1535-SB4-G engine for the British Royal Navy. Designated Chesapeake Mk.I; 50 built.
V-167     The V-156 company demonstrator was fitted with a more powerful Pratt & Whitney R-1830 engine and redesignated V-167. It remained an one-off.

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MPM V-156 B Chesapeake