military-aircraft-pbm

Originating from a 1937 requirement for a patrol flying boat, the XPBM-1 first flew in February 1939, with 1,600-hp R-2600-6 radial, bomb bay in the two engines nacelles, and retractable stabilizing floats. The Mariner was overshadowed by the numerically superior Consolidated PBY, but was a superior machine offering better performance with less vulnerability. Production of the Mariner totaled 1,366 up to 1947, and the type served mainly in the Pacific, remaining in service past the Korean War (1950-53) in a number of first and second roles.

Description	Specifications
Manufacturer: Martin	Length: 80 ft. 0 in.
First Flight: February 1939	Height: 27 ft. 6 in.
Model: C	Wing Span: 118 ft. 0 in.
Crew: Seven / eight.	Wing Area: 1,408.0 sq. ft.
Nickname: Mariner	Empty Weight: 32,378 lb.
Basic Role: Maritime reconnaissance flying boat.	Max. Weight: 58,000 lb.
Other Versions: PBM-1 initial model. PBM-3B British Mariner GR.Mk 1 with fixed stabilizing floats and greater power. PBM-3C improved 3B with armor protection and revised armament including a 4,000-lb bomb load. PBM-3D greater power and provision for an 8,000 lb war load including torpedoes. PBM-3R unarmed transport for 20 passengers or freight. PBM-3S anti submarine model. PBM-5 2,100-hp Pratt & Whitney R2800-34 Double Wasp radials. PBM-5A amphibian version with retractable tricycle landing gear. PBM-5E radar carrying conversion. PBM-5G SAR model. PBM-5S anti submarine model.	Armament: Seven 0.5-in 12.7-mm machine guns in two gun nose and dorsal turret and in single gun beam and tail positions, and up to 4,000 lb of bombs or depth charges.
Principal User: Argentina, Australia, Great Britain, the Netherlands, Uruguay, and USA.	Propulsion
Performance	Power Plant: Wright R-2600-12 Cyclone radial piston engines.
Range: 2,137 miles.	Horsepower: 1,700-hp.
Max. Speed: 198 mph at 13,000 ft.	No. Of Engines: Two
Ceiling: 16,900 ft.
Climb Rate: 410 ft. per minute.