It is shown on the 1873 maps 1:500 and 1:2500. There was a line that ran along The Stade side of the harbour with a turntable (not sure of the correct terminology) at the end of a jetty at the Eastern end of the harbour parallel to the East Pier, it is not clear if the line went along the jetty, I think it did but am not sure. The line ran Northwards where a carpenter's shop and a smith's shop were located east and north of the line respectively. It joined the main line on the approach to the swing bridge via another turntable at the Western end of The Stade, this also had a branch off along what is shown as a slipway on the later maps.
It is shown on the 1898 and 1907 1:2500 maps.