WThe Ardent-class ships of the line were a class of seven 64-gun third rates, designed for the Royal Navy by Sir Thomas Slade.
WHMS 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.
WHMS Ardent was a 64-gun third-rate ship of the line of the Royal Navy. She was built by contract at Blaydes Yard in Hull according to a design by Sir Thomas Slade, and launched on 13 August 1764 as the first ship of the Ardent-class. She had a somewhat turbulent career, being captured by the French in the action of 17 August 1779, and then re-captured by Britain in 1782.
WHMS Belliqueux was a 64-gun third rate ship of the line of the Royal Navy, launched on 5 June 1780 at Blackwall Yard, London. She was named after the French ship Belliqueux captured in 1758.
WHMS Indefatigable was one of the Ardent-class 64-gun third-rate ships-of-the-line designed by Sir Thomas Slade in 1761 for the Royal Navy. She was built as a ship-of-the-line, but most of her active service took place after her conversion to a 44-gun razee frigate. She had a long career under several distinguished commanders, serving throughout the French Revolutionary Wars and the Napoleonic Wars. She took some 27 prizes, alone or in company, and the Admiralty authorised the issue of four clasps to the Naval General Service Medal in 1847 to any surviving members of her crews from the respective actions. She was broken up in 1816.
WHMS Nassau was a 64-gun third rate ship of the line of the Royal Navy, launched on 28 September 1785 by Hilhouse in Bristol.
WHMS Raisonnable was a 64-gun third-rate ship of the line of the Royal Navy, named after the ship of the same name captured from the French in 1758. She was built at Chatham Dockyard, launched on 10 December 1768 and commissioned on 17 November 1770 under the command of Captain Maurice Suckling, Horatio Nelson's uncle. Raisonnable was built to the same lines as HMS Ardent, and was one of the seven ships forming the Ardent class of 1761. Raisonnable was the first ship in which Nelson served.