The layout is of a fictional South Wales dock set in the immediate pre-nationalisation era, just before the demise of the Great Western railway.

Built as a double-track mainline continuous run with a single through goods and passenger and a branch line.  The main station includes a goods yard and a loco shed.  Above the arches a goods line runs continuously, controlled by a shuttle unit.

Most of the main buildings are scratch built aoart from the large factory which is a stretched kit.  Bothe roads have magnet operated lorries to add movement interest and the cranes simulate the loading and unloading of a ship.