Battle on the Zuiderzee
1573 CE.
Shown on the map at 52.833°, 5.333°.
The Battle on the Zuiderzee (October 11, 1573) was a naval battle during the Eighty Years' War in which a Dutch fleet triumphed over a larger and better-equipped Spanish fleet on the Zuiderzee.
Text from the Wikipedia article Battle on the Zuiderzee, licensed CC BY-SA 4.0.