The Martin Mars
The Worlds Largest Sea Plane

This page is going to give a brief history of the Mars and display some pictures. For more information, pictures, and action video clips of the Martin Mars, I recommend you to visit the official website of Forest Industries Flying Tankers Limited.

Brief History of the Martin Mars

The Martin Mars was originally ordered by the US Navy in 1938, as a flying-boat patrol bomber. The XPB2M-1 prototype flew for the first time on 3 July 1942, before being converted to transport configuration as the XPB2M-1R in late 1943. In January 1945, 20 Wright R-3350-8-powered JRM-1 Mars transports were ordered by the US Navy, but only five were built, followed by a single JRM-2 powered by more powerful R-4360 engines and with a higher take-off weight of 82 1/2 tons. The five JRM-1 were later upgraded to the same standard under the designation JRM-3.

The six production aircraft were operated by VR-2 of the US Navy's Air Transport Service till 1956. One was lost in an accident in 1945 and another was destroyed in a fire in 1950. In 1959, MacMillan Bloedel bought the remaining four aircraft, together with 30 engines and a massive holding of spares, for $100,000. Operations with the Mars began from Sproat Lake in 1960.

Mariana Mars was destroyed in a fatal crash near Parkville on Vancouver Island during 1961. Carolina Mars was destroyed on the ground during a typhoon at Pat Bay Airport the following year. The two survivors, Philippine Mars and Hawaii Mars, have plenty of life left in them. Many expect them to serve into the next century.

Click Image To Enlarge

Flightdeck Image Hawaii Mars Image

Hawaii Mars Flight Deck

Hawaii Mars

  Specifications
Manufacturer: Glenn L. Martin Company
Power Plant: Four Wright Cyclone R3350-24WA
engines @ 2500h.p. each (1865 kw)
Curtiss Electric 4-blade propellers with a  
blade diameter of 15 ft. 2 in. (5 m)
Overall Length: 120 ft. (36m)
Height: 48 ft. (14.63 m)
Hull Beam: 13.5 ft. (4.12 m)
Hull Draft: 5.5 ft. (1.68 m)
Wing Span: 200 ft. (61 m)
Gross Weight: 162,000 lbs. (73,483 kg)
Water/Foam Load: 60,000 lbs. (27,216 kg)
Cruising Speed to Fire: 190 mph (305 kmh)
Drop Speed: 138 mph (220 kmh)
Landing Approach Speed: 115 mph (185 kmh
Touchdown Speed: 92 mph (148 kmh)
Fuel Consumption (Cruise): 337 US gal (1,275 lph)
Fuel Consumption (Operations): 780 US gal (2,955 lph)
Fuel Capacity
Hawaii Mars:
Philippine Mars:
 
6,485 US gal (24,550 Liters)
13,200 US gal (49,962 Liters)
Operations Duration (normal): 5 1/2 hours
Area Covered, single drop: 3 to 4 acres (1.2 to 1.6 ha)
Drop Height: 150 to 200 ft. (45m to 61m)
Full Tank Load: 7,200 US gal (27,276 Liters)

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Last update03/20/10 03:34
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