HMS Excellent was a 74-gun third-rate ship of the line of the Royal Navy, launched at Harwich on 27 November 1787. She was the captaincy of John Gell before he was appointed an Admiral.

Harwich Dockyard was a Royal Navy Dockyard at Harwich in Essex, active in the 17th and early 18th century. Owing to its position on the East Coast of England, the yard was of strategic importance during the Anglo-Dutch Wars; however, due to a lack of deep-water access and the difficulty of setting off from Harwich against an easterly wind, its usefulness was somewhat limited and its facilities remained small-scale compared to the other Royal Dockyards over the same period. Nonetheless, it remained actively involved in repairing and refitting the nation's warships, as well as building them: of the eighty ships built for the Royal Navy in Britain between 1660 and 1688, fourteen were built at Harwich Dockyard..