Martin JRM Mars

JRM Mars
JRM-2 Mars "Caroline Mars" in US Navy service
Role	Flying boat Type of aircraft
National origin	United States
Manufacturer	Glenn L. Martin Company
First flight	23 June 1942
Introduction	30 November 1943
Retired	1956 (USN)
Status	Inactive
Primary users	United States Navy (historical) Forest Industries Flying Tankers (FIFT) (historical) Coulson Flying Tankers (historical)
Produced	1945–1948
Number built	7
Developed into	Martin 193

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 United States Navy contracted the development of the XPB2M-1 Mars in 1938 as a long-range ocean patrol flying boat, which later entered production as the JRM Mars long-range transport.

Four of the surviving aircraft were later converted for civilian use to firefighting water bombers. Two of the aircraft still remain based at Sproat Lake just outside of Port Alberni, British Columbia, although neither is operational. On March 28, 2024, the British Columbia Aviation Museum announced it will be acquiring the Hawaii Mars from Coulson Aviation. It is scheduled to be flown in late 2024 to Victoria and be part of a permanent display. ^[1] On April 25, 2024, it was announced that Philippine Mars will be acquired by the Pima Air and Space Museum in Tucson, Arizona to be put in permanent display there.^[2]