Józef Unrug was a Polish admiral who helped establish Poland's navy after World War I. During the opening stages of World War II, he served as the Polish Navy's commander-in-chief. As a German POW, he refused all German offers to change sides and was incarcerated in several Oflags, including Colditz Castle. He stayed in exile after the war in the United Kingdom, Morocco and France where he died and was buried. In September 2018 he was posthumously promoted in the rank of Admiral of the fleet by the President of Poland. After 45 years his remains, along with those of his wife Zofia, were exhumed from Montrésor and taken in October 2018 to his final resting place in Gdynia, Poland.

The Polish Navy is the naval branch of the Polish Armed Forces. The Polish Navy consists of 46 ships and about 12,000 commissioned and enlisted personnel. The traditional ship prefix in the Polish Navy is ORP.