The Polish Navy has its roots in naval vessels that were largely employed on Poland's main rivers in defense of trade and commerce.
During the Thirteen Years' War (1454–66), a small force of ships that primarily operated on rivers and lakes saw real open sea battles for the first time.
At the Battle of Vistula Lagoon, a combined fleet of the Kingdom of Poland and the pro-Polish Prussian Confederation decisively defeated the navy of the Teutonic Knights, and secured permanent access to the Baltic Sea.
[4] Around the start of the 17th century, Poland became ruled by the House of Vasa, and was involved in a series of wars with Sweden (see also dominium maris baltici).
[4] During the reign of Sigismund III of Poland, the most celebrated victory of the Commonwealth Navy took place at the Battle of Oliwa in 1627 against the Swedish Empire, during the Polish–Swedish War.
The victory over the Swedish fleet secured for Poland permanent access to the Baltic, and laid the foundations for potential expeditions beyond Europe.
Władysław IV Vasa, Sigismund's son and successor who took the throne in 1632, purchased 12 ships and built a dedicated port for the royal navy called Władysławowo.
In the 1920s and 1930s the Polish Navy underwent a modernisation program under the leadership of Vice-Admiral Jerzy Świrski (Chief of Naval Staff) and Rear-Admiral Józef Unrug (CO of the Fleet).
Despite ambitious plans (including 2 cruisers and 12 destroyers), the budgetary limitations placed on the government by the Great Depression never allowed the navy to expand beyond a small Baltic force.
By September 1939 the Polish Navy consisted of 5 submarines, 4 destroyers, 1 big minelayer and various smaller support vessels and mine-warfare ships.
Lacking numerical superiority, Polish Naval commanders decided to withdraw main surface ships to Great Britain to join the Allied war effort and prevent them from being destroyed in a closed Baltic (the Peking Plan).
Also two submarines managed to flee from the Baltic Sea through the Danish straits to Great Britain during the Polish September Campaign (one of them, ORP Orzeł, made a daring escape from internment in Tallinn, Estonia, and traveled without charts).
In addition to participating in the sinking of Bismarck, the Polish Navy sank an enemy destroyer and six other surface ships, two submarines and a number of merchant vessels.
After World War II, on 7 July 1945, the new Soviet-imposed Communist government revived the Polish Navy with headquarters in Gdynia.
During the Communist period, Poland's navy experienced a great buildup, including the development of a separate amphibious force of Polish Marines.
Poland's entrance into the North Atlantic Treaty Organization has greatly changed the structure and role of the Polish Navy.
To facilitate these changes the Republic of Poland undertook a number of modernization programs aimed at creating a force capable of power projection.
That same year joint American-Polish submarine training manoeuvres codenamed "Baltic Porpoise" for the first time utilized the port in a multinational military exercise.
[8] In addition, although the force considers larger warships unsuitable for the confines of the Baltic Sea, the strategy called for extending the operational lifespan of one Oliver Hazard Perry-class frigate.