Kevin,
The Fulmar II began deliveries somewhere in 1942. The Martlet II October 1940, The F4F-3
4 December 1940. The USN VF-6 receives the first F4F-3As (Martlet III) in May 1941.
FYI: The Martlet II / Wilcat II
Maximum speed at Sea Level: 292 mph.
Maximum speed at 14,000 ft.: 317 mph.
Fulmar II production began in Dec 1940. Deliveries in early 1941.