Battle of Hjörungavágr
984 CE.
Shown on the map at 62.358°, 6.100°.
The Battle of Hjǫrungavágr (Norwegian: Slaget ved Hjørungavåg) is a semi-legendary naval battle that took place in the late 10th century between the Jarls of Lade and a Danish invasion fleet led by the fabled Jomsvikings. This battle played an important role in the struggle by Haakon Sigurdsson (c. 937 – 995) to unite his rule over Norway. Traditionally, the battle has been set during the year 986.
Text from the Wikipedia article Battle of Hjörungavágr, licensed CC BY-SA 4.0.