HMS Dreadnought was a Royal Navy 98-gun second rate. This ship of the line was launched at Portsmouth at midday on Saturday, 13 June 1801, after she had spent 13 years on the stocks. She was the first man-of-war launched since the Act of Union 1800 created the United Kingdom of Great Britain and Ireland, and at her head displayed a lion couchant on a scroll bearing the Royal arms as emblazoned on the Standard.
HMS Tonnant was an 80-gun ship of the line of the Royal Navy. She had previously been Tonnant of the French Navy and the lead ship of the Tonnant class. The British captured her in August 1793 during the Siege of Toulon but the French recaptured her when the siege was broken in December. Rear-Admiral Horatio Nelson captured her at Aboukir Bay off the coast of Egypt at the Battle of the Nile on 1 August 1798. She was taken into British service as HMS Tonnant. She went on to fight at the Battle of Trafalgar in 1805, during the Napoleonic Wars.
HMS Agamemnon was a 64-gun third-rate ship of the line of the British Royal Navy. She saw service in the American Revolutionary War, French Revolutionary and Napoleonic Wars, and fought in many of the major naval battles of those conflicts. She is remembered as being Nelson's favourite ship, and was named after the mythical ancient Greek king Agamemnon, being the first ship of the Royal Navy to bear the name.
HMS Ajax was an Ajax-class 74-gun third-rate ship of the line of the British Royal Navy. She was built by John Randall & Co of Rotherhithe and launched on the Thames on 3 March 1798. Ajax participated in the Egyptian operation of 1801, the Battle of Cape Finisterre in 1805 and the Battle of Trafalgar, before she was lost to a disastrous fire in 1807 during the Dardanelles Operation.
HMS Neptune was a 98-gun second-rate ship of the line of the Royal Navy. She served on a number of stations during the French Revolutionary and Napoleonic Wars and was present at the Battle of Trafalgar in 1805.
HMS Polyphemus, a 64-gun third-rate ship of the line of the Royal Navy, launched on 27 April 1782 at Sheerness. She participated in the 1801 Battle of Copenhagen, the Battle of Trafalgar, and the Siege of Santo Domingo. In 1813 she became a powder hulk and was broken up in 1827.
HMS Thunderer was a ship of the line of the Royal Navy, built in 1783. She carried 74-guns, being classified as a third rate. During her service she took part in several prominent naval battles of the French Revolutionary Wars and the Napoleonic Wars; including the Glorious First of June, the Battle of Cape Finisterre and the Battle of Trafalgar.
HMS Orion was a 74-gun third rate ship of the line of the British Royal Navy, launched at Deptford on 1 June 1787 to the design of the Canada class, by William Bately. She took part in all the major actions of the French Revolutionary and Napoleonic Wars under a series of distinguished captains.
HMS Monmouth was a 66-gun third-rate ship of the line of the Royal Navy, and was likely named for James, Duke of Monmouth. She served from 1667 to 1767, winning ten battle honours over a century of active service. She was rebuilt a total of three times during her career—each time effectively becoming a completely new ship.
HMS Berwick was a 74-gun Elizabeth-class third rate of the Royal Navy, launched at Portsmouth Dockyard on 18 April 1775, to a design by Sir Thomas Slade. She fought the French at the Battle of Ushant (1778) and the Dutch at the Battle of Dogger Bank (1781). The French captured her in the action of 8 March 1795 during the French Revolutionary Wars and she served with them with some success then and at the start of the Napoleonic Wars until the British recaptured her at the Battle of Trafalgar. Berwick sank shortly thereafter in a storm.
HMS Swiftsure was a 74-gun third rate ship of the line of the British Royal Navy. She spent most of her career serving with the British, except for a brief period when she was captured by the French during the Napoleonic Wars in the action of 24 June 1801. She fought in several of the most famous engagements of the French Revolutionary and Napoleonic Wars, fighting for the British at the Battle of the Nile, and the French at the Battle of Trafalgar.
HMS Alexander was a 74-gun third-rate of the Royal Navy. She was launched at Deptford Dockyard on 8 October 1778. During her career she was captured by the French, and later recaptured by the British. She fought at the Nile in 1798, and was broken up in 1819. She was named after Alexander the Great.
HMS Edgar was a 74-gun third-rate ship of the line of the Royal Navy, that saw service in the American Revolutionary, French Revolutionary and Napoleonic Wars. Launched in 1779, she fought in the battles of Cape St Vincent and Copenhagen, two of the major naval engagements of the wars.
HMS Robust was a 74-gun third-rate ship of the line of the Royal Navy, built by John Barnard and launched on 25 October 1764 at Harwich. She was the first vessel of the Royal Navy to bear the name.
HMS Egmont was a 74-gun third rate ship of the line of the Royal Navy, launched on 29 August 1768 at Deptford. She was designed by Sir Thomas Slade, and was the only ship built to her draught.
HMS Powerful was a 74-gun third rate ship of the line of the Royal Navy. She took part in the defeat of a Dutch fleet in the Battle of Camperdown in 1797, the capture of a French privateer in the action of 9 July 1806, in operations against the Dutch in the East Indies during the raids on Batavia and Griessie in 1806 and 1807, and finally in the Walcheren Campaign during 1809.
HMS Caesar, also Cæsar, was an 80-gun third rate ship of the line of the Royal Navy, launched on 16 November 1793 at Plymouth. She was designed by Sir Edward Hunt, and was the only ship built to her draught. She was also one of only two British-built 80-gun ships of the period, the other being HMS Foudroyant.
HMS Dragon was a 74-gun third rate ship of the line of the Royal Navy, launched on 2 April 1798 at Rotherhithe. She was designed by Sir William Rule, and was the only ship built to her draught.
HMS Donegal was launched in 1794 as Barra, a Téméraire class 74-gun ship of the line of the French Navy. She was renamed Pégase in October 1795, and Hoche in December 1797. The British Royal Navy captured her at the Battle of Tory Island on 12 October 1798 and recommissioned her as HMS Donegal.
The Third Battle of Ushant or the action of 20–21 April 1782 was a naval battle fought during the American Revolutionary War, between a French naval fleet of three ships of the line protecting a convoy and two British Royal naval ships of the line off Ushant, a French island at the mouth of the English Channel off the northwesternmost point of France. This was the third battle that occurred in this region during the course of the war.
Great Britain 
