The A-20G/Boston flew as an attack/night intruder in 1941 with a crew of three (pilot, navigator, rear gunner). It was powered by 1180kW Wright R-2600-23 engines to a maximum speed of 340 mph (548 km/h). The ceiling was 25,500 ft (7800m) and range was 1087 mi (1750km). Armament was heavy, consisted of five 0.303 machine guns, four 20mm cannons in the nose, and 4,000 lb (1814kg) of bombs (equal to that of a B-24 Liberator). The pilot controlled the forward firing guns and bombs.
The Boston Mk.III medium bomber flew first in 1942 with a crew of four (pilot, navigator, bomb aimer and rear gunner). It was powered by two 1600hp Wright GR-2600-A5B engines to a maximum speed of 304 mph (490km/h). It reached a ceiling of 24,200 ft (7400m) and had a range of 1,025 mi (1650km). It came armed with eight 0.50 inch machine guns (more than a Lancaster bomber) and could carry 2000 lb (905kg) of bombs.
Canadian Aces Home Page
Image From: an on-line photo archive