The Bartel BM 1 Maryla, originally Bartel M.1 was a fighter aircraft design for the Polish military that did not advance beyond the design stage.
It was designed in response to a Polish War Ministry competition in 1925 and was placed third, netting Bartel a zł 1,000 prize.
The design was a single-seat parasol-wing monoplane similar in configuration to the Nieuport-Delage sesquiplanes of the era.
A distinctive feature were Y-shaped struts joining wing with an undercarriage.
[1] Data from Polish Aircraft 1893–1939[1] Bartel BM-1 "Maryla", 1925[2]General characteristics Performance Armament