The Battle of Rügen was a naval battle near the island of Rügen (in modern Germany), that took place on 21 May 1565 between an allied fleet of 6 Danish and 3 Lübeck ships, and a Swedish fleet of 48 ships with a total of 1,638 guns and 8,000 men under Klas Horn. The Swedish fleet was victorious, and 4 of the allied ships were burned, while the remaining 5 were captured.
References
Battle of Rügen (1565) Wikipedia(Text) CC BY-SA