This was the implementation at Langstone, based on that at the Firths of Forth and Tay. See article http://haylingbillyheritage.org/uncategorised/prototype-for-brading-langstone-train-ferry/.
the main differences were;
1. the engine used for the winching of the bridge section was enclosed in a building and
2. only two railway tracks were catered for.
Note: Locomotives were not allowed on the bridge section and all movements of the wagons was by cable controlled by the static winch engine.