1843 - name changed from Plymouth Dock to Devonport Royal Dockyard. Construction started on the Keyham (steam) Yard, linked to the main dockyard by a tunnel.

1853 - Keyham (steam) Yard opened.

1863 - Ocean launched.

1895 - the ram cruiser Arrogant launched.

1896 - the ram cruiser Furious launched.

1898 - the battleship Implacable launched.

1899 - construction work began on the extension of Keyham, Yard.

1902 - the battleship Prince Edward launched.

1905 - Hibernia launched.

1907 - new extension to Keyham Yard officially opened. Temeraire launched.

1908 - Collingwood launched.

1911 - Centurion launched.

1912 - Marlborough launched.

1913 - Warspite launched. Work commenced on a turbine shop to repair and maintain the units responsible for powering the dreadnought battleships.

1914 - Royal Oak launched.

1940 - German bombing raids devastated the south yard.

1956 - the aircraft carrier, the Centaur, entered dry dock for extensive refitting.

1962 - post war reconstruction culminated in the completion of the dockyard wall.

1966 - a new central office block completed.

1968 - Scylla, the last vessel built at the dockyard, launched.

1969 - announcement that the dockyard would become an operational base for nuclear powered submarines.

1973 - Refitting facilities for nuclear submarines commenced.

1977 - new frigate complex opened.

1981 - the new Submarine Refit Complex completed on the old Keyham extension.