Dan K wrote:
CAPFlyer wrote:
Coulson's Hawaii Mars and Philippine Mars are it. There were originally 5. The Marshall Mars was lost in Honolulu bay in 1950 after an engine fire was unable to be extinguished, Marianas Mars crashed during firefighting operations in 1960, and Caroline Mars was destroyed by Typhoon Freda (the plane was parked onshore when the Typhoon hit) in 1962.
For the sake of accuracy, weren't there actually seven Mars?
The prototype: BuNo 1520
And the production models: BuNos 76819-76824
Technically, the prototype wasn't a JRM. It was a XPB2M-1 later converted to the XPB2M-1R when converted to a transport prototype. However, it never gained the advanced planing hull nor the single tail that the production JRM's received, making it more of a "one-off" technology demonstrator like the 367-80 than a true prototype like 747-100 RA001 (quickest comparison I could come up with

).
But yes, I did forget about the first JRM
Hawaii Mars(1) that was a real prototype for the Mars and sank after an engine fire in 1945.