Key figures: Admiral Augustus Keppel (British), Vice-Admiral Sir Hugh Palliser (British), Vice-Admiral Comte Louis Guillouet d’Orvilliers (French)
Summary
The Battle of Ushant (also known as the First Battle of Ushant) was fought on July 27, 1778, approximately 100 miles west of Ushant Island (Île d’Ouessant) in the Bay of Biscay. It was the first major fleet engagement between Britain and France during the American Revolutionary War, fought just months after the Franco-American alliance of February 6, 1778, prompted Britain to declare war on France in March 1778.
British Admiral Augustus Keppel commanded 29 ships-of-the-line with approximately 21,000 men embarked, while French Vice-Admiral Comte d’Orvilliers commanded 30 ships-of-the-line. After a full day of cannonades, the battle concluded without a decisive outcome. French casualties amounted to 126 killed and 413 wounded; British casualties were heavier at 407 killed and 789 wounded, sustained in the close-range exchange as the lines passed (see below). Neither fleet lost a ship-of-the-line. The French withdrew under cover of darkness and returned to Brest; the British fleet, with damaged rigging, could not pursue.
Background and Strategic Context
Britain’s declaration of war against France in March 1778 transformed the American Revolutionary War from a colonial rebellion into a global conflict. France had been covertly supplying the American Continental Army since 1776 through Pierre-Augustin Caron de Beaumarchais’s trading house, but the formal alliance — signed the same day as the Treaty of Amity and Commerce — committed French naval and land forces to open hostilities.
The Royal Navy in 1778 was unprepared for a major fleet engagement. Years of peacetime economy had left British warships undermanned and under-maintained. Keppel’s Channel Fleet at Portsmouth needed months of refit before putting to sea. When it finally sailed in June 1778, its ships were not fully provisioned and several of its admirals were political appointments whose loyalties during the ongoing Whig-Tory conflict over the American war were questioned by their subordinates.
France, by contrast, had spent the preceding decade rebuilding its navy after the catastrophic losses of the Seven Years’ War (1756–1763). Under naval minister Gabriel de Sartine and the direction of engineers like Antoine Groignard, French shipyards had produced a generation of well-designed, copper-bottomed ships-of-the-line that were faster and more maneuverable than their British counterparts. The Brest fleet of 1778 was the most capable French naval force in a generation.
Fleet Composition and Tactical Doctrine
The two fleets carried contrasting tactical doctrines that shaped the battle’s outcome. British naval doctrine — codified in the Fighting Instructions — emphasized close engagement and boarding, with gunners trained to target enemy hulls to sink or disable ships. French doctrine (the Instructions Nautiques) prioritized fleet preservation and the guerre de course strategy: gunners were trained to target rigging and masts, disabling enemy ships while preserving the French fleet for future operations.
At Ushant this difference shaped the battle’s material outcome. As the fleets passed on opposite tacks at close range, both sides took heavy personnel losses — the British casualties (407 killed and 789 wounded) exceeding the French (126 killed and 413 wounded) — but the decisive asymmetry was aloft: French fire directed high into the masts and rigging left several British ships so thoroughly disabled that, by evening, the fleet could not pursue the French withdrawal. The tactical draw thus amounted to a French strategic success: d’Orvilliers had kept his fleet intact and demonstrated that France could contest the Channel.
Key ships in the engagement:
- HMS Victory (100 guns) — Keppel’s flagship, present at Ushant though not yet famous; it would later serve as Nelson’s flagship at Trafalgar (1805)
- HMS Formidable (90 guns) — Palliser’s flagship, center of the controversy
- Bretagne (110 guns) — d’Orvilliers’s flagship, the largest ship in either fleet
Course of the Battle
The fleets first sighted each other on July 23, 1778, and maneuvered for four days seeking the weather gauge (wind advantage). On July 27 the French fleet, holding the weather gauge, bore down on the British line in a single extended cannonade at approximately 11:00 a.m. Both lines exchanged fire for several hours at close range before separating to repair damage.
In the afternoon, Keppel attempted to re-engage by signaling a line-ahead formation. Vice-Admiral Palliser, commanding the rear division with the most heavily damaged ships, failed to comply with the signal and instead maintained a disorganized position. By the time the rear division regrouped, evening was approaching. The French fleet, using the cover of night and favorable winds, withdrew southwest toward Brest. Keppel’s fleet, its rigging too damaged to pursue effectively, returned to Portsmouth.
The battle lasted approximately six hours of active engagement. Despite the scale of forces involved — nearly 50,000 men aboard combined fleets of 59 ships-of-the-line — the tactical result was inconclusive.
The Keppel–Palliser Controversy
The political aftermath proved more damaging to Britain than the battle itself. Sir Hugh Palliser, a Lord of the Admiralty and political ally of the North ministry, accused Admiral Keppel — a Whig MP and opponent of the American war — of misconduct and negligence in failing to re-engage the French fleet. Palliser filed formal charges in December 1778, triggering a court-martial that began in January 1779 at Portsmouth.
The court-martial became a cause célèbre in British political life. Keppel’s supporters argued the charges were politically motivated — an attempt by the Tory ministry to neutralize a prominent Whig naval officer. The proceedings attracted enormous public attention; when Keppel was acquitted on all charges in February 1779, crowds in London celebrated by breaking the windows of Admiralty offices and the home of Lord Sandwich (First Lord of the Admiralty).
Palliser was subsequently court-martialed for his own conduct at Ushant. He was found guilty of partial neglect of duty, censured, and removed from the Privy Council. He resigned as a Lord of the Admiralty in 1779. The dual court-martials damaged British naval command cohesion at a moment when coherent strategy was essential, contributing to the series of British naval reverses that followed in 1779–1781.
Significance
The Battle of Ushant demonstrated that France could credibly challenge British naval dominance on the open ocean — a strategic finding that bolstered the credibility of the Franco-American alliance. Although inconclusive tactically, the battle revealed British naval vulnerability and proved that the Royal Navy could no longer count on uncontested control of European waters. The French strategy of maintaining a “fleet-in-being” rather than seeking a decisive battle proved effective and shaped French naval strategy for the remainder of the war.
Strategically, Ushant marked a turning point in the broader Atlantic theater. Britain’s earlier hope of defeating the American rebellion through naval dominance and blockade became untenable once French naval power had to be treated as a peer threat. The resources Britain had to deploy to Channel defense in 1779 and 1780 — responding to a threatened Franco-Spanish invasion — directly constrained British operations in North America. The Valley Forge encampment of the previous winter had tested Continental Army survival; Ushant confirmed that France had the naval capacity to sustain a long war against Britain.
The engagement also demonstrated the importance of copper sheathing on warships. French copper-bottomed ships were cleaner and faster after months at sea; British ships fouled by barnacles were slower and less maneuverable, a disadvantage that affected the battle and accelerated the Royal Navy’s own copper-sheathing program for all its ships-of-the-line through the early 1780s.
See Also
- Franco-American Alliance (1778) — the diplomatic trigger that brought France into the war
- Britain Declares War on France (1778) — the formal escalation preceding the battle
- Battle of Monmouth (1778) — concurrent American theater engagement, June 28, 1778
- Valley Forge Encampment — Continental Army’s crisis winter 1777–78, overcome months before Ushant
- War of Bavarian Succession — simultaneous European conflict (1778–1779) that divided French strategic attention
- Comte d’Estaing — the French admiral who led the war’s other 1778 naval theater, off the American coast, while Ushant was fought in European waters
Sources
- Battle of Ushant (1778) — Wikipedia, encyclopedic overview
- The Battle of Ushant – 27 July 1778 – and the Political Aftermath — More Than Nelson, specialist naval history
- Nicholas Rodger, The Command of the Ocean: A Naval History of Britain, 1649–1815 — standard scholarly treatment of British naval history in this period