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Battle of Quiberon Bay

1759 battle of the Seven Years' War

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In the battle, a British fleet of 24 ships of the line under Admiral of the Blue Sir Edward Hawke tracked down and engaged a French fleet of 21 ships of the line under Chef d'escadre Hubert de Brienne. After hard fighting, the British fleet sank or ran aground six French ships of the line, captured one and scattered the rest, giving the Royal Navy one of its greatest victories, and ending the threat of French invasion for good. The battle cemented the dominance of the Royal Navy for the rest of the war and for the British formed part of the Annus Mirabilis of 1759.

Background

The endemic ill feeling between France and Great Britain during the 18th century turned into open warfare in 1754 and 1755. In 1756 what become known as the Seven Years' War broke out across Europe, pitching France, Austria and Russia against Britain and Prussia. France supported Austria and Russia in a land campaign against Prussia, and launched what it saw as its main effort in a maritime and colonial offensive against Britain. By the beginning of 1759 neither alliance had the advantage, in either the land or sea campaigns, and both were having serious problems financing the war. In 1759 more than 60% of French revenue went to service its debt, causing numerous shortages. The French navy in particular was overstretched and suffered from the lack of a coherent doctrine, exacerbated by the inexperience verging on incompetence of the Secretary of State for the Navy, Nicolas René Berryer, a former chief of police. Meanwhile, Britain's war effort up to early 1756 had been a failure. From the summer of 1757 it came under the control of the assertive new secretary of state for the Southern Department (foreign minister), William Pitt, who imposed a coordinated strategy. By early 1759 this was beginning to bear fruit.

In response to the British successes, Louis XV's minister planned a direct invasion of Britain, which if successful would have decided the war in their favour. An army of 17,000 was collected at Vannes, in the south-east of Brittany, and nearly 100 transports were assembled near Quiberon Bay, plus several warships sailing en flûte, that is with their guns stripped out to allow them to transport more soldiers. In its final form the French plan required these transports to be escorted by the French Navy.

However, at the best of times the French struggled to crew their full fleet with experienced mariners; landsmen could be used, but even a small deficiency in ship handling translated into a significant handicap in a combat situation. Three years into the war, thousands of French seamen were held as prisoners by the British; many more were engaged in speculative, and occasionally lucrative, privateering careers; and the unhealthy conditions, onerous onboard discipline and poor wages, paid late, acted as a strong disincentive to service. The transports also required at least a cadre of skilled men. By the summer of 1759 the French had 73 ships of the line, the largest warships of the era: 30 serving abroad and 43 in home waters. The ships in home waters required an aggregate complement of about 25,000 men; they were more than 9,000 short of this. The 43 French ships in home waters were split between the Atlantic port of Brest (22 ships) and the Mediterranean port of Toulon, with a small number at two ports on the Bay of Biscay: Lorient and Rochefort. The British had 40 ships of the line in home waters, and a further 15 in their Mediterranean Fleet, which was based in Gibraltar.

Brest was the obvious starting point for the expedition: it was a major port; it was well placed with regard to the prevailing winds; and departure from it minimised the sailing distance and time to the proposed landing site. However, Brest was at the end of a long and relatively infertile peninsula, which made supporting a large number of men there difficult; supplies of food had to come in by sea and were vulnerable to the British blockade. A typhoid epidemic in Brest during 1757–1758 killed over 4,000 French seamen, greatly exacerbating their shortage of experienced sailors. In addition, there was fear of a recurrence of the typhus outbreak. Therefore, the army assembled at Vannes and its transports gathered around the Gulf of Morbihan; the terrain was more fertile, the anchorage was large and sheltered, and men and supplies could readily be despatched from Bordeaux, Rochefort, Nantes, or Orléans.

In August, the French Mediterranean Fleet under Jean-François de La Clue-Sabran attempted to break out past Gibraltar into the Atlantic. The British Mediterranean Fleet under Edward Boscawen caught them and a two-day battle resulted in three French ships of the line being captured, two destroyed, and five blockaded in neutral Cádiz; two escaped the battle to reach Rochefort. The five French ships in Cadiz were blockaded by Boscawen's second-in-command, Thomas Brodrick. Five of Boscawen's victorious ships were transferred to Admiral of the Blue Sir Edward Hawke's fleet, off Brest.

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