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The Martin JRM Mars is a large, four-engined cargo transport flying boat designed and built by the Martin Company for the United States Navy during World War II. It was the largest Allied flying boat to enter production, although only seven were built.
The Martin M-130 was a commercial flying boat designed and built in 1935 by the Glenn L. Martin Company in Baltimore, Maryland, for Pan American Airways. Three were built: the China Clipper , the Philippine Clipper and the Hawaii Clipper .
To test the PBM's layout, Martin built a three-eighths scale flying model, the Martin 162A Tadpole Clipper with a crew of one and powered by a single 120 hp (89 kW) Chevrolet engine driving two airscrews via v-belts; this was flown in December 1937. [3] [4] This was followed by an initial production order for 21 PBM-1 aircraft on 28 December ...
It was basically a 40% enlargement of the Martin JRM Mars, weighing 250,000 pounds at takeoff and featuring a longer hull and wingspan, being powered by six radial piston engines. No powerplant types were revealed. The Martin 193 lost out to the Hughes H-4 Hercules, and after the end of World War II obviated the urgency for Sky Freighters ...
Martin 170A JRM Mars; Martin 170B JRM-2, JRM-3; Martin 170C 165000 lb four-engine commercial flying boat; Martin 171 long-range, high-speed patrol bomber, class VPB;
The Mars was converted by the Navy into a transport aircraft designated the XPB2M-1R. Satisfied with the performance, 20 of the modified JRM-1 Mars were ordered. The first of the five production Mars flying boats entered service ferrying cargo to Hawaii and the Pacific Islands on 23 January 1944. [50]
The Martin Mars aircraft was initially developed for the US Navy in WWII as a cargo transport seaplane, and was the largest Allied flying boat to enter production. Only seven were built, and three were lost by 1950. The remaining four of the world's only fleet of mighty Martin Mars aircraft were purchased from the US Navy by FIFT in December 1959.
This list of United States Navy aircraft designations (pre-1962) includes prototype, pre-production and operational type designations under the 1922 United States Navy aircraft designation system, which was used by the United States Navy, the United States Marine Corps, and the United States Coast Guard.