Originally, the
British Admiralty operated these ships. The designation "RMS" has been used since 1840. In 1850 contracts were awarded to private companies. Having the title "RMS" was seen as a mark of quality and a competitive advantage, because the mail had to be on time. The most valuable route, with the highest volume, was between Kingstown (now
Dún Laoghaire), in
Ireland, and
Holyhead in
Wales. The
City of Dublin Steam Packet Company (CDSPCo) won the contract. They bought RMS
St Columba and RMS
Llewellyn from the Admiralty to supplement their
Prince Arthur. In the CDSPCo contract, in 1860, there was a penalty clause of
£1 1s 4d for every minute's delay. The
Canadian Pacific's trans-Pacific Royal Mail contract required the building of the first three of a fleet of steamships: the , and which regularly sailed between Vancouver and Asia beginning in 1891. The RMS designation was also used on the ships of the
White Star,
P&O and
Cunard lines of the 19th and 20th centuries. The most famous liner with the RMS title was the . ==Modern times==