The 'Modern Tramway' Journal of September 1963 had a short article about the Harbour Tramways in Derry, written by J.H. Price. ... http://rogerfarnworth.com/2023/09/10/derry-history-the-harbour-tramways-railways/ Friday 31st August, 1962, saw the closing of the dockside dual-gauge tramways of the Port and Harbour Commissioners in Derry.
The curved waterfront and structures are interesting. So many who model the various railways, when building their water features, do so in a straight line.
Yes, for those of us with limited space this is perhaps not too surprising, but where space allows curves makes models more realistic.