The dockyard developed from an Elizabethan and early modern naval base into one of Britain's principal state shipyards. Chatham Historic Dockyard Trust says the working dockyard closed on 30 March 1984 after roughly four centuries of Royal Navy presence, and that more than 400 ships and submarines were built there.
Chatham is especially useful as a manufacturer attribution for naval systems because its output spans several major technology changes. Historic England describes the preserved site as unusually intact evidence for building and maintaining the sailing navy, while the modern trust frames the site as evidence of the passage from wooden warships to submarines.
Royal Navy warship constructionShip repair and refitSailing warshipsIron and steam-era naval constructionSubmarine construction and support
Chatham Dockyard was a state naval dockyard, not a private manufacturer. Sources may describe it as a dockyard, Royal Dockyard, shipyard, or preserved historic site depending on period and context.