Six of seven YB-24s built and twenty B-24As were transfered to Great Britain for use beginning in March 1941. These planes were redesignated LB30 and given standard British serial numbers. LB was short for Liberator British. The US Army adopted the Liberator nickname for its B-24s.
The British received more than 500 Liberators for uses ranging from long endurance coastal patrols to long range transports (C-87). LB30s were delivered in upgraded models throughout World War II.
- Six YB-24 to Great Britain as LB30A (Serial Numbers: AM258 to AM263)
- Twenty aircraft to Great Britain as LB30B (Serial Numbers: AM910 to AM929)
- One hundred sixty five aircraft to Great Britain as LB30 Mk. II
- One hundred fifty six aircraft to Great Britain as LB30 Mk. III
- More LB30s delivered as LB30 Mk. IV through Mk. IX
SPECIFICATIONS (Liberator Mk. II)
Span: 110 ft. 0 in.
Length: 66 ft. 4 in.
Height: 18 ft. 0 in.
Weight: 46,250 lbs. max.
Armament: Eleven .30-cal. machine guns, plus 8,800 lbs. of bombs (max.)
Engines: Four Pratt & Whitney R-1830-33 radials of 1,200 hp. each (take-off power)
Maximum speed:263 mph.
Cruising speed: 180 mph.
Range: 4,700 miles (ferry range); 3,000 miles with 2,500 lbs. of bombs
Service Ceiling: 24,000 ft.