 The tidal river is navigable to large ocean-going ships as far upstream as the Pool of London and London Bridge.Although London's upstream enclosed docks have closed and central London sees only the occasional visiting cruise ship or warship, the tidal river remains one of Britain's main ports.Around 60 active terminals cater for shipping of all types including ro-ro ferries, cruise liners and vessels carrying containers, vehicles, timber, grain, paper, crude oil, petroleum products, liquified petroleum gas etc.