Action of 18 March 1748
1748 CE.
Shown on the map at 37.008°, -9.028°.
The action of 18 March 1748 was a naval engagement during the War of Jenkins' Ear in which a fleet of six Royal Naval vessels captured a number of merchantman in a successful engagement against a Spanish convoy escorted by nine ships of the line and frigates.
Text from the Wikipedia article Action of 18 March 1748, licensed CC BY-SA 4.0.