1942 XPB2M-1 Mars, BuAer 1520

four 2200hp Wright R-3350

In 1938 the Navy ordered a single prototype Martin Model 170 as an experimental patrol bomber, XPB2M-1.

Navy redesignated this one and only XPB2M-1 Mars as a transport, XPB2M-1R.

Aeroplane Photo Supply No. 236

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Aeroplane Photo Supply No. 2712

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