The Aeromarine M-1 was a two-seat training biplane ordered by the US Army's Aviation Section, U.S. Signal Corps (USAAS) in 1917 and built by the Aeromarine Plane and Motor Company of Keyport, New Jersey.

[2] The seaplane version was later called the Aeromarine 39 and sold to the United States Navy (USN).

Both aircraft shared much in common, aside from the undercarriage, the primary difference was that the M-1's wingspan was shorter than the Aeromarine 39.

"Preliminary tests showed that the M1 was unstable in anything but level flight, and most spent the war years packed in their crates.

"[4] In 1920, there was a proposal to re-engine these aircraft with the Aeromarine 100hp motor[5] General characteristics Performance