General characteristics
- Crew: 11 (pilot, co-pilot, navigator, bombardier, radio operator, nose turret, top turret, 2 waist gunners, ball turret, tail gunner)
- Length: 67 ft 2 in (20.47 m)
- Wingspan: 110 ft (34 m)
- Height: 17 ft 7.5 in (5.372 m)
- Wing area: 1,048 sq ft (97.4 m2)
- Aspect ratio: 11.55
- Zero-lift drag coefficient: CD0.0406
- Frontal area: 42.54 sq ft (3.952 m2)
- Airfoil: root: Davis (22%); tip: Davis (9.3%)
- Empty weight: 36,500 lb (16,556 kg)
- Gross weight: 55,000 lb (24,948 kg)
- Max takeoff weight: 65,000 lb (29,484 kg) plus
- Fuel capacity: 2,344 US gal (1,952 imp gal; 8,870 l) normal capacity; 3,614 US gal (3,009 imp gal; 13,680 l) with long-range tanks in the bomb bay; Oil capacity 131.6 US gal (109.6 imp gal; 498 l) in four self-sealing nacelle hopper tanks
- Powerplant: 4 × Pratt & Whitney R-1830-35 Twin Wasp, R-1830-41 or R-1830-65 14-cylinder two-row air-cooled turbosupercharged radial piston engines, 1,200 hp (890 kW) each
- Propellers: 3-bladed Hamilton Standard, 11 ft 7 in (3.53 m) diameter constant-speed fully-feathering propellers
Performance
- Maximum speed: 297 mph (478 km/h, 258 kn) at 25,000 ft (7,600 m)
- Cruise speed: 215 mph (346 km/h, 187 kn)
- Stall speed: 95 mph (153 km/h, 83 kn)
- Range: 1,540 mi (2,480 km, 1,340 nmi) at 237 mph (206 kn; 381 km/h) and 25,000 ft (7,600 m) with normal fuel and maximum internal bomb load
- Ferry range: 3,700 mi (6,000 km, 3,200 nmi)
- Service ceiling: 28,000 ft (8,500 m)
- Rate of climb: 1,025 ft/min (5.21 m/s)
- Time to altitude: 20,000 ft (6,100 m) in 25 minutes
- Lift-to-drag: 12.9
- Wing loading: 52.5 lb/sq ft (256 kg/m2)
- Power/mass: 0.0873 hp/lb (0.1435 kW/kg)
Armament
- Guns: 10 × .50 caliber (12.7 mm) M2 Browning machine guns in 4 turrets and two waist positions
- Bombs: ** Short range (˜400 mi [640 km]): 8,000 pounds (3,600 kg)
- Long range (˜800 mi [1,300 km]): 5,000 pounds (2,300 kg)
- Very long range (˜1,200 mi [1,900 km]): 2,700 pounds (1,200 kg)
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