HMS Bellona was a 74-gun Bellona-class third-rate ship of the line of the Royal Navy. Designed by Sir Thomas Slade, she was a prototype for the iconic 74-gun ships of the latter part of the 18th century. "The design of the Bellona class was never repeated precisely, but Slade experimented slightly with the lines, and the Arrogant, Ramillies, Egmont, and Elizabeth classes were almost identical in size, layout, and structure, and had only slight variations in the shape of the underwater hull. The Culloden-class ship of the line was also similar, but slightly larger. Thus over forty ships were near-sisters of the Bellona." Bellona was built at Chatham, starting on 10 May 1758, launched on 19 February 1760, and commissioned three days later. She was the second ship of the Royal Navy to bear the name, and saw service in the Seven Years' War, American Revolutionary War and the Napoleonic Wars.

Courageux was a 74-gun ship of the line of the French Navy, launched in 1753. She was captured by the Royal Navy in 1761 and taken into service as HMS Courageux. In 1778 she joined the Channel Fleet, and she was later part of the squadron commanded by Commodore Charles Fielding that controversially captured a Dutch convoy on 31 December 1779, in what became known as the Affair of Fielding and Bylandt. On 4 January 1781, Courageux recaptured Minerva in a close-range action west of Ushant that lasted more than an hour. That April, Courageux joined the convoy under George Darby which successfully relieved the Great Siege of Gibraltar.