[3] The four turbines drove twin screw propellers through single reduction gearing[2] and they had a total power output of 948 nhp (3,300 kW).

[3] Twickenham Ferry was built by Swan, Hunter and Wigham Richardson Ltd as yard number 1446.

[2] Jointly owned by the Southern Railway & Angleterre-Lorraine-Alsace, she was built for service on the Dover - Dunkerque route,[1] but initially operated out of Southampton as the new facilities at Dover were not ready.

[3] Her port of registry was London and the code letters GWTQ were allocated.

[4] Twickenham Ferry commenced service between Dover and Dunkerque on 6 October 1936.

[3] Her port of registry was changed to London and the code letters BCYF were allocated.

[6] She was put into service between Larne and Stranraer from July to December 1940, and again from March 1941 to January 1944.

[6] On 24 January 1945, HMS Twickenham was involved in a collision with the tug Empire Rupert 10 nautical miles (19 km) off Dover (51°03′N 1°32′E / 51.050°N 1.533°E / 51.050; 1.533).