In the previus post, I maentioned that the CSS Shenandoah was taken to the Herculaneum Dock.
The Herculaneum Dock is at the southern end of the Liverpool dock system on the River Mersey. It was named after the Herculaneum Pottery Company which occupied the site from 1794-1841.
The dock was built starting in 1864, designed by George Fosbery Lyster and opened in 1866.
During World War II it served as a terminus for the North Atlantic Convoys.
It is no longer a dock.
They were classified as graving docks (and had three of them). A graving dock is another name for a drydock.