Royal Mail Line

Royal Mail Steam Packet Company

Royal Mail Steam Packet Company House flag
Industry	Shipping
Fate	Liquidated
Successor	Royal Mail Lines Ltd
Founded	1839
Founder	James Macqueen
Defunct	1932
Headquarters	London, United Kingdom
Key people	Lord Kylsant

The Royal Mail Steam Packet Company was a British shipping company founded in London in 1839 by a Scot, James MacQueen. The line's motto was Per Mare Ubique (everywhere by sea). After good and bad times it became the largest shipping group in the world in 1927 when it took over the White Star Line.

The company was liquidated and its assets taken over by the newly formed Royal Mail Lines in 1932 after financial trouble and scandal; over the years RML declined to no more than the name of a service run by former rival Hamburg Süd.

Queen Victoria granted the initial Royal Charter of Incorporation of "The Royal Mail Steam Packet Company" on 26 September 1839. In 1840 the Admiralty and the Royal Mail Steam Packet Company made a contract in which the latter agreed to provide a fleet of not fewer than 14 steam vessels for the purpose of carrying all Her Majesty's mails, to sail twice every month to Barbados in the West Indies from Southampton or Falmouth. Fourteen new steam vessels were built for the purpose: Thames, Medway, Trent, and Isis (built at Northfleet); Severn and Avon (built at Bristol); Tweed, Clyde, Teviot, Dee, and Solway (built at Greenock); Tay (built at Dumbarton); Forth (built at Leith); and Medina, (built at Cowes). In reference to their destination, these vessels were known as the West Indies Mail Steamers.

The West Indian Mail Service was established by the sailing of the first Royal Mail Steam Packet, PS Thames from Falmouth on 1 January 1841. A Supplemental Royal Charter was granted on 30 August 1851 extending the sphere of the Company's operations. In 1864, the mail service to the British Honduras was established. A further Supplemental Royal Charter was granted extending the sphere of the Company's operations on 7 March 1882.

In the decade before the First World War the RMSP modernised its fleet, introducing a series of larger liners ranging from 9,588 GRT to 15,551 GRT on its Southampton – Buenos Aires route. Each had a name beginning with the letter "A", so collectively they were called the "A-liners" or the "A-series". The first was RMS Aragon in 1905, followed by sister ships Amazon, Araguaya and Avon in 1906, Asturias in 1908, Arlanza in 1912, Andes and Alcantara in 1913 and Almanzora in 1915. Earlier members of the series, from Aragon to Asturias, had twin screws, each driven by a four-cylinder quadruple-expansion steam engine. The final four members of the series, from Arlanza to Almanzora, had triple screws, with the middle one driven by a low pressure Parsons steam turbine.