Dún Laoghaire - Rathdown, Eire - June 2002
Memorial to the 564 crew, passengers and postal workers of the RMS LEINSTER sunk by U-Boat during World War I.
RMS LEINSTER was operated by the City of Dublin Steam Packet Company.
She served as the Kingstown-Holyhead Royal Mail Ship until she was torpedoed and sunk by the German submarine U-123, which was under the command of Oberleutnant zur See Robert Ramm, on 10 October 1918, while bound for Holyhead.
She sank just outside Dublin Bay at a point 4 nautical miles (7.4 km) east of the Kish light.
The exact number of dead is unknown but researchers from the National Maritime Museum believe it was at least 564; this would make it the largest single loss of life in the Irish Sea