98 guns:
- Gundeck: 28 × 32 pdrs
- Middle gundeck: 30 × 18 pdrs
- Upper gundeck: 30 × 18 pdrs
- Quarterdeck: 8 × 12 pdrs
- Forecastle: 2 × 12 pdrs
HMS Ocean was a 98-gun second-rate ship of the line of the Royal Navy, launched from Woolwich Dockyard on 24 October 1805. She was the only ship built to her draught, and designed by Sir John Henslow.
She was converted to serve as a depot ship in 1841, and was eventually broken up in 1875. Her figurehead is preserved at Queenborough, Kent.