When HMS London was launched, she was designated as a 90 gunner due to her quarterdeck not carrying any armaments. She was later very simply up-gunned by having 8 cannons added to this space. The other three ships of her class were launched with a 98 gun designation.
Designed solely as a cost-saving measure, three deckers of a somewhat cheaper price than first rates, these ships were dogged by appalling maneuverability without the saving grace of at least carrying a heavy armament. Indeed, barring HMS Impregnable, all the ships of this class were in some way modified so as to deal with fears that they were both matched in firepower and outmaneuvered by French and Spanish 80 gun vessels.
Prince was present at Trafalgar (where, thanks to the class’s appalling handling and speed, she failed to reach the battle in time to be of much use) and Windsor Castle participated in the failed Dardanelles Operation prior to her being reduced.
London was broken up in 1811, Prince in 1837 and Windsor Castle in 1839, while HMS Impregnable ran aground on a shoal in 1799.