Lockheed Corporation

B-37 Ventura

The Lockheed B‑37 Ventura was a twin‑engine medium bomber and patrol aircraft that entered service in the early 1940s, bridging the gap between the aging Lockheed Hudson and the more powerful B‑24 Liberator. Developed from the Lockheed Model 18 Lodestar transport, the Ventura first flew in October 1941 and was quickly adopted by the United States Army Air Forces and several Allied air forces for maritime strike, anti‑submarine warfare, and medium‑altitude bombing missions. Powered by two Pratt & Whitney R‑2800 Double Wasp radial engines delivering 2,000 hp each, the B‑37 could reach 300 mph and carry up to 3,000 lb of ordnance, including 500‑lb bombs and depth charges. Its robust airframe featured a glazed nose for a bombardier and a defensive armament suite of .50‑caliber machine guns in dorsal, ventral, and tail turrets. The ventilation’s versatility allowed conversion to a transport (C‑97) and a reconnaissance variant (B‑37A). Though eclipsed by newer designs later in the war, the Ventura’s reliability, speed, and payload made it a valuable asset in the Battle of the Atlantic and in the Pacific theater, earning a reputation for effectiveness in both offensive and patrol roles and underscoring Lockheed’s contribution to WWII aviation technology.
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Classification

Design & Classification

Manufacturer
Lockheed Corporation
Military Designation
RB-37, O-56
Engine
R-2600-13 Twin Cyclone
Wikidata ID
Q18176739