Battle of Lagos

This article is about the 1759 battle. For the 1693 battle, see Battle of Lagos (1693).

Battle of Lagos
Part of the Seven Years' War
an oil painting showing several 18th-century warships fighting. The British flagship, HMS Namur
The British Royal Navy defeats the French Mediterranean Fleet at the Battle of Lagos
by Richard Paton
Date18–19 August 1759
Location
Atlantic Ocean between Gibraltar and Lagos, Portugal
36°18′N 7°18′W / 36.3°N 7.3°W / 36.3; -7.3
Result British victory
Belligerents
 Great Britain  France
Commanders and leaders
Edward Boscawen Jean-François de La Clue-Sabran
Strength
15 ships of the line
10 frigates
2 sloops
2 fireships		 12 ships of the line
3 frigates
Casualties and losses
252 killed and wounded 1,000 killed and wounded
2 ships of the line destroyed
3 ships of the line captured

The naval Battle of Lagos took place between a British fleet commanded by Edward Boscawen and a French fleet under Jean-François de La Clue-Sabran over two days in 1759 during the Seven Years' War. They fought south west of the Gulf of Cádiz on 18 August and to the east of the small Portuguese port of Lagos, after which the battle is named, on 19 August.

La Clue was attempting to evade Boscawen and bring the French Mediterranean Fleet into the Atlantic, avoiding battle if possible; he was then under orders to sail for the West Indies. Boscawen was under orders to prevent a French breakout into the Atlantic, and to pursue and fight the French if they did. During the evening of 17 August the French fleet successfully passed through the Strait of Gibraltar, but was sighted by a British ship shortly after it entered the Atlantic. The British fleet was in nearby Gibraltar, undergoing a major refit. It left port amidst great confusion, most ships not having their refurbishments completed, with many delayed and sailing in a second squadron. Aware that he was pursued, La Clue altered his plan and changed course; half his ships failed to follow him in the dark, but the British did.

The British caught up with the French on 18 August and fierce fighting ensued, during which several ships were badly damaged and one French ship was captured. The British pursued the remaining ships through the moonlit night of 18–19 August, during which two French ships made their escape. On 19 August the remnants of the French fleet attempted to shelter in neutral Portuguese waters near Lagos. Boscawen then captured a further two French ships and destroying the other two.