Naval ensign of <a href="https://en.wikipedia.org/wiki/Poland" class="extiw" title="w:Poland">Poland</a>. Based on <a href="//commons.wikimedia.org/wiki/File:Naval_Ensign_of_Poland.svg" title="File:Naval Ensign of Poland.svg">File:Naval Ensign of Poland.svg</a> and <a href="//commons.wikimedia.org/wiki/File:Herb_PRL.svg" class="mw-redirect" title="File:Herb PRL.svg">File:Herb PRL.svg</a>. This was the naval ensign of the People's Republic of Poland. Officially abandoned in 1990 - so was used by 3rd Republic Navy also.
<ul><li><a href="//commons.wikimedia.org/wiki/File:Naval_Ensign_of_Poland.svg" title="File:Naval Ensign of Poland.svg">Naval Ensign of Poland.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Denelson83" title="User:Denelson83">Denelson83</a>, <a href="//commons.wikimedia.org/wiki/User:Mareklug" title="User:Mareklug">Mareklug</a>, <a href="//commons.wikimedia.org/wiki/User:Wanted" title="User:Wanted">Wanted</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:Herb_PRL.svg" class="mw-redirect" title="File:Herb PRL.svg">Herb PRL.svg</a>: <a href="//commons.wikimedia.org/wiki/User:Ausir" title="User:Ausir">Ausir</a>, <a href="//commons.wikimedia.org/wiki/User:Huhsunqu" title="User:Huhsunqu">Huhsunqu</a></li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Mboro" title="User:Mboro">Mboro</a></li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:Naval_Ensign_of_Poland.svg" title="File:Naval Ensign of Poland.svg">Naval Ensign of Poland.svg</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:Herb_PRL.svg" class="mw-redirect" title="File:Herb PRL.svg">Herb PRL.svg</a></li></ul>