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Portsmouth Dockyard , Her Majesty's Naval Base, Portsmouth (HMNB Portsmouth) or Portsmouth Historic Dockyard
HM Naval Base, Portsmouth, Hampshire, PO1 3LJ. There is a lot to see at the historic dockyard and details can be found on the website.
In 1540 the dockyard covered an area of only about 8 acres.
The dockyard (like the other dockyards underwent reforms proposed by Samuel Bentham, Inspector-General of Naval Works. Among his innovations were Portsmouth Block Mills, an early example of truly industrial-scale production.
From here Nelson, embarking on HMS Victory, which is well-preserved, left Britain for the final time before his death at the Battle of Trafalgar.
HMS Warrior was built here.
Mr. Cradock was the Master Shipwright and Chief Engineer in 1866. 
WWI HMS M33, a WWI monitor built.
WWII Portsmouth and the Naval Base itself were the headquarters and main departure point for the military and naval units destined for Sword Beach on the Normandy coast as a part of Operation Overlord and the D-Day Landings on June 6, 1944.
1909 See plan of dockyard in 1909.