Tranmere Oil Terminal is situated on the River Mersey, 1.5 mi (2.4 km) south of Birkenhead.

Part of the terminal occupies the site of a former ferry service to Liverpool, with the extant pier considerably modified.

[4] It was built to replace the role of the Herculaneum Dock and the later Eastham Oil Terminal which had only been inaugurated in 1954, but which did not have sufficient water depth to handle the 65,000 ton vessels that were operating by 1960.

[4] By 2001, the terminal had two converted crude oil tanks which could handle 30,000 t (30,000 long tons).

[6] Tranmere handles 140 ships every year, carrying a total of 9 million tonnes of crude oil.