The railways have always been good at making use of things they have lying around to create something new and useful and when the need arose for new engineering various spare air braked wagons made suitable donors.

Converted during the early 1990's the Sea Urchins were designed as a replacement for older vacuum braked and unfitted engineers wagons used for carrying ballast or spoil with reinforcing ribs to help them withstand the battering given to them by mechanical excavators when loading or unloading.

This Train Simulator expansion features ZCA Sea Urchins converted from two different lots of VDA vans later on in their careers when some of them received EWS maroon and gold livery either as a result of maintenance or through vandalism.