10/31/2009. The B-23 Dragon was a development of the B-18A Bolo, with a refined fuselage and a tail gun position, a first in a US bomber. In addition to the 0.50 in (12.7 mm) tail gun there were 0.30 in (7.62 mm) guns in the nose, dorsal and ventral positions. The engines were 1,600 hp Wright R-2600-3 radials.

No prototypes nor service trials aircraft were ordered, only a single contract for 38 B-23s (c/n 2713 to 2750, s/n 39-27 to 39-64) was placed, the first flying on July 27, 1939. Dragons served briefly on coastal patrols on the Pacific coast before being relegated to training. Twelve were converted to transports and for glider towing as UC-67 in 1942.

Span: 92 ft 0 in (28.04 m)
Length: 58 ft 4.75 in (17.80 m)
Height: 18 ft 5.5 in (5.63 m)
Wing area: 993 sq.ft (92.25 sq.m)
Weight empty: 19,089 lb (8,659 kg)
Max weight: 32,400 lb (14,696 kg)
Max speed: 282 mph (454 kmh) at 12,000 ft (3,658 m)
Cruise speed: 210 mph (338 kmh)
Service ceiling: 31,600 ft (9,632 m)
Climb: to 10,000 ft (3,048 m) 6.7 min
Range: 2,750 mls (4,426 km)