"M.V. CAMBRIA - BRITISH RAILWAYS HOLYHEAD - DUN LAOGHAIRE SERVICE". M.V. Cambria: M.V. Cambria was a twin screw motor vessel which was built by Harland & Wolff in Belfast and launched in 1948. Between 1948 and 1962 she was operated by the British Transport Commission and from 1962 to 1976 by British Railways.