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.
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 Dwinsk was a transatlantic ocean liner that was launched in Ireland in 1897 as Rotterdam, renamed C. F. Tietgen in 1906, and renamed Dwinsk in 1913. A U-boat sank her in 1918, with the loss of 23 lives. The ship was built for Holland America Line, but was successively owned by Scandinavian America Line and Russian American Line, and after the Russian Revolution she was managed by Cunard Line.
SS Potsdam was a steam ocean liner that was launched in Germany in 1899 for Holland America Line. In 1915 Swedish American Line acquired her and renamed her Stockholm.
USS Rijndam (ID–2505) was the Holland America Line (HAL) ocean liner Rijndam, also spelt Ryndam, which was launched in Ireland in 1901 and scrapped in the Netherlands in 1929. The US requisitioned her as the United States Navy troopship USS Rijndam from 1918 until 1919. She was the first of four Holland America Line ships to be called Ryndam.
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.
SS Statendam was a transatlantic ocean liner that was launched in Ireland in 1898 for Holland America Line. She was the first of several ships in the company's history to be called Statendam. She was NASM's first ship of more than 10,000 GRT, and she was the largest ship in the company's fleet until Potsdam was completed in 1900.
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.
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.
SS Arcadian was an ocean liner launched in Barrow-in-Furness in 1899 by Vickers, Sons & Maxim Ltd for the Pacific Steam Navigation Company as Ortona. She was renamed Arcadian when the Royal Mail Steam Packet Company acquired her in 1906. She was chartered for the Royal Navy in 1915, and was sunk by a U-boat in 1917.
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.
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 Trent was a British steamship that was built in 1899 as an ocean liner for the Royal Mail Steam Packet Company (RMSP) service between England and the Caribbean. In the First World War she was a Royal Navy depot ship. She was scrapped in 1922.
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 Rotterdam was a steam ocean liner that was launched and completed in Ireland in 1908, and scrapped in the Netherlands in 1940. Holland America Line (HAL) owned and operated her throughout her career. She was the fourth of seven HAL ships to have been named after the Dutch city of Rotterdam. Until Statendam entered service in 1929, Rotterdam was the largest and swiftest ship in the company's fleet, and was the company's flagship.
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 spent her entire career with the Royal Mail Steam Packet Company (RMSP), mainly trading between England and the Caribbean.
United Kingdom 
Royal Mail Steam Packet Co 
