Battle of Rügen
1715 CE.
Shown on the map at 54.588°, 13.507°.
Battle of Rügen was a major naval battle fought on August 8, 1715 off Jasmund on the Swedish island of Rügen (present-day Germany) during the Great Northern War. In the Swedish navy 20 ships of the line and two frigates participated, in the Danish 21 ships of the line and four frigates. The battle ended with a Danish strategic victory but was tactically inconclusive. No ships were lost on either side but many soldiers were either dead or wounded – Sweden: 478, Denmark: 612.
Text from the Wikipedia article Battle of Rügen (1715), licensed CC BY-SA 4.0.