Specifications (Vickers Windsor Type 447)
Data from Vickers Aircraft since 1908[3]
General characteristics
Crew: six to seven[4]
Length: 76 ft 10 in (23.42 m)
Wingspan: 117 ft 2 in (35.71 m)
Height: 23 ft 0 in (7.01 m)
Wing area: 1,248 sq ft (115.9 m2)
Empty weight: 38,606 lb (17,511 kg)
Gross weight: 54,000 lb (24,494 kg)
Powerplant: 4 × Rolls-Royce Merlin 65 liquid-cooled V12 engine
Performance
Maximum speed: 317 mph (510 km/h; 275 kn) at 23,000 ft (7,000 m)
Range: 2,890 mi (2,511 nmi; 4,651 km) with 8,000 lb (3,600 kg) bombload
Service ceiling: 27,250 ft (8,310 m)
Rate of clim

1,250 ft/min (6.4 m/s)
Armament
Guns: 4 × 20 mm cannon in remote controlled barbettes firing to rear[4]
Bombs: about 15,000 lb (6,800 kg) of bombs[4]
Not little .303 popguns.