[3] Exhibits included cars, a bus and tram, a lighthouse, a figurehead from HMS Hamadryad, the Sea Alarm tugboat and a replica of Richard Trevithick's 1803 locomotive, Pen-y-Darren.

[3] A permanent exhibition described the history of the docks and coal mining in South Wales.

[5] The museum closed on 1 June 1998 to make way for the new Mermaid Quay shopping development.

Its exhibits were redistributed to other museums and the Sea Alarm was scrapped.

[2] A new location for a similar museum, in Swansea, was not chosen until two years after the closure.