Ensign of Polish Army river ships 1939-1939 (not river naval ships). Based on File:Flag of Poland (with coat of arms).svg and File:Anchor pictogram.svg.
Adam Kromer - "Polskie flagi..." flaga wojskowych statków żeglugi śródlądowej 1938-1939.
Flag of Poland (with coat of arms).svg
Anchor_pictogram.svg
Flag of Poland (with coat of arms).svg: Aotearoa
Anchor_pictogram.svg: egg extracted the symbol out of the coat of arms
derivative work: Mboro (talk)