Powered by four Bristol Hercules XVI engines with an output of 1675 Hp, these amazing planes had a maximum speed of 277 miles per hour at 6,000 feet and a cruising speed of 225 miles per hour at 20,000 feet. The range was 1,770 miles.
The dimensions were also amazing, the wing span being 104 feet 2 inches, length 71 feet 7 inches and height, 20 feet 9 inches. Empty they weighed 38,332 lb and 65,000 lb when fully laden.
The armament consisted of eight .303 Browning machine guns in the mid-upper and tail turrets with provision for one Vickers K gun in the nose.
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