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  2. Martin JRM Mars - Wikipedia

    en.wikipedia.org/wiki/Martin_JRM_Mars

    Hawaii Mars I – JRM-1 BuNo 76819 first flown on 21 July 1945 and delivered to the United States Navy. It sank on 5 August 1945 in the Chesapeake Bay and was disposed as scrap. Philippine MarsJRM-1 BuNo 76820, delivered to the USN on 26 June 1946 and assigned to VR-2 at NAS Alameda, California. Converted and re-designated JRM-3.

  3. Martin PBM Mariner - Wikipedia

    en.wikipedia.org/wiki/Martin_PBM_Mariner

    It received an order for a single prototype XPBM-1 on 30 June 1937. [2] 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.

  4. Martin 193 - Wikipedia

    en.wikipedia.org/wiki/Martin_193

    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 ...

  5. Flying boat - Wikipedia

    en.wikipedia.org/wiki/Flying_boat

    Short S23 "C" Class or "Empire" flying boat A PBM Mariner takes off in 1942 Dornier X in 1932. A flying boat is a type of seaplane with a hull, allowing it to land on water. [1] It differs from a floatplane in having a fuselage that is purpose-designed for flotation, while floatplanes rely on fuselage-mounted floats for buoyancy.

  6. Glenn L. Martin Company - Wikipedia

    en.wikipedia.org/wiki/Glenn_L._Martin_Company

    The Glenn L. Martin Company, also known as The Martin Company from 1917 to 1961, was an American aircraft and aerospace manufacturing company founded by aviation pioneer Glenn L. Martin. The Martin Company produced many important aircraft for the defense of the US and allies, especially during World War II and the Cold War .

  7. Lockheed R6V Constitution - Wikipedia

    en.wikipedia.org/wiki/Lockheed_R6V_Constitution

    Although these two planes went into service with the Navy, the Constitution design ultimately proved underpowered and too large for practical airline use at the time. Although the Martin JRM Mars flying boat had a slightly longer wingspan, the Constitution remains the largest fixed-wing aircraft type ever operated by the U.S. Navy.

  8. List of large aircraft - Wikipedia

    en.wikipedia.org/wiki/List_of_large_aircraft

    Martin JRM Mars: 23 Jun 1942: Flying boat: 7: 39.04 yards (35.70 meters) 66.71 yards (61.00 meters) 73.62 tons: 14.76 tons: Heaviest until the Junkers 390, Largest serial production flying boat Latécoère 631: 4 Nov 1942: Flying boat: 11: 47.57 yards (43.50 meters) 62.77 yards (57.40 meters) 70.27 tons: Pax: 46 Longest until the Convair B-36 ...

  9. Martin M-130 - Wikipedia

    en.wikipedia.org/wiki/Martin_M-130

    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. All three had crashed by 1945.