RMS Arlanza was a 14,622 GRT ocean liner of the Royal Mail Steam Packet Company. She was built in Belfast in 1912 for RMSP's scheduled route between England and South America. She was a Royal Navy armed merchant cruiser from 1915 until 1920. She returned to civilian liner service in 1920 and was scrapped in 1938.
RMS Alcantara was a Royal Mail Lines ocean liner that was built in Belfast in 1926. She served in the Second World War first as an armed merchant cruiser and then a troop ship. She returned to civilian service in 1948 and was scrapped in 1958.
RMS Amazon was a wooden three-masted barque, paddle steamer and Royal Mail Ship. She was the first of 5 sister ships commissioned by the Royal Mail Steam Packet Company to serve RMSP's routes between Southampton and the Caribbean.
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. After a troubled start, 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.
SS Pennsylvania was a transatlantic liner that was launched in Ireland in 1896 and spent most of her career with Hamburg America Line (HAPAG). She was the first of a class of four HAPAG sister ships that were built in the United Kingdom and Germany between 1896 and 1899.
RMS Atrato was a UK steamship that was built in 1888 as a Royal Mail Ship and ocean liner for the Royal Mail Steam Packet Company. In 1912 she was sold and became the cruise ship The Viking. Late in 1914 she was requisitioned and converted into the armed merchant cruiser HMS Viknor. She sank in 1915 with all hands, a total of 295 Royal Navy officers and men.
HMHS Lanfranc was a Booth Line passenger steamship that was built in Scotland in 1907 and operated scheduled services between Liverpool and Brazil until 1914. In the First World War she was a hospital ship until a U-boat sank her in the English Channel in 1917.
RMS Magdalena was a British steamship that was built in 1889 as a Royal Mail Ship and ocean liner for the Royal Mail Steam Packet Company. In the First World War she served as the troop ship HMT Magdalena. After a long and successful civilian and military career she was scrapped in 1923.
RMS Atrato was a UK iron-hulled steamship. She was built in 1853 for the Royal Mail Steam Packet Company as a side-wheel paddle steamer, and at the time of her launch was the world's largest passenger ship. In 1870 RMSP traded Atrato in, causing her to lose the status of "Royal Mail Ship". She was converted to a single screw ship with a compound steam engine in 1872, and placed on the Aberdeen Line that chartered her to run to Victoria and New Zealand. In 1880 she was renamed Rochester before sinking four years later in 1884 by running aground.
SS Calgaric was a steam ocean liner that was completed in 1917, assumes service in 1918 and scrapped in 1934. She was built for the Pacific SN Co Line as Orca. In 1923 she was transferred to the Royal Mail Line. In 1927 she was transferred to White Star Line and renamed Calgaric.
HMT Aragon, originally RMS Aragon, was a 9,588 GRT transatlantic Royal Mail Ship that served as a troop ship in the First World War. She was built in Belfast, Ireland in 1905 and was the first of the Royal Mail Steam Packet Company's fleet of "A-liners" that worked regular routes between Southampton and South American ports including Buenos Aires.
SS Themistocles was a UK steam ocean liner and refrigerated cargo ship. She was launched in 1910 in Ireland and scrapped in 1947 in Scotland. She was built for Aberdeen Line, White Star Line managed her for a few years, and she spent the latter part of her career with Shaw, Savill & Albion Line.
RMS Asturias was a Royal Mail Steam Packet Company ocean liner that was built in Ireland in 1908 and scrapped in Japan in 1933. She was a Royal Mail Ship until 1914, when on the eve of the First World War the British Admiralty requisitioned her as a hospital ship.
SS Pennland was a transatlantic ocean liner that was launched as Pittsburgh in Ireland in 1920 and renamed Pennland in 1926. She had a succession of UK, German and Dutch owners and operators. In 1940 she was converted into a troopship.
RMS Andes was a 26,689 GRT steam turbine Royal Mail Ship, ocean liner, cruise ship, and the flagship of the Royal Mail Lines fleet. She was the second Royal Mail ship to be named after the South American Andes mountain range. The first RMS Andes was an A-class liner launched in 1913. In 1929 that RMS Andes was converted into a cruise ship and renamed Atlantis.
RMS Asturias was a Royal Mail Lines ocean liner that was built in Belfast in 1925. She served in the Second World War as an armed merchant cruiser until she was crippled by a torpedo in 1943. She was out of action until 1948 when she returned to civilian service as an emigrant ship. She became a troop ship in 1954 and was scrapped in 1957.
SS Sagamore was a transatlantic cargo liner that was built in Ireland in 1892 for George Warren's White Diamond Steam Ship Company. In 1913 she was modified to carry passengers as well as cargo. In 1917 a German U-boat sank her, causing the death of 52 members of her crew.
SS Vandyck was a 1911 steam ocean liner operated by Lamport and Holt Line and used on its service between New York and the River Plate. The German cruiser Karlsruhe sank her in 1914.
SS Potaro was a refrigerated cargo steamship that was built in Belfast in 1904, and captured and scuttled in the First World War in 1915.
RMS Orinoco was a British Royal Mail Ship that was built in Scotland in 1886 and scrapped, also in Scotland, in 1909. She spenther entire career with the Royal Mail Steam Packet Company (RMSP), mainly trading between England and the Caribbean.
United Kingdom 
Royal Mail Steam Packet Co 
