Question: Which ocean liner was built by John Brown & Company and until 1952 held the transatlantic speed record?
Context: Queen Elizabeth 2, often referred to simply as QE2, is an ocean liner built for the Cunard Line which was operated by Cunard as both a transatlantic liner and a cruise ship from 1969 to 2008.  She was designed for the transatlantic service from her home port of Southampton, UK, to New York, and was named after the earlier Cunard liner  .  She served as the flagship of the line from 1969 until succeeded by  in 2004.  Designed in Cunard's then headquarters and regional offices in Liverpool and Southampton respectively, and built in Clydebank, Scotland, she was considered the last of the great transatlantic ocean liners until the construction of the Queen Mary 2 was announced. SS Servia, also known as RMS "Servia", was a successful transatlantic passenger and mail steamer of revolutionary design, built by J & G Thomson of Clydebank (later John Brown & Company) and launched in 1881.  She was the first large ocean liner to be built of steel instead of iron, and the first Cunard ship to have an electric lighting installation.  For these and other reasons, maritime historians often consider "Servia" to be the first "modern" ocean liner. RMS "Aquitania" was a Cunard Line ocean liner designed by Leonard Peskett and built by John Brown & Company in Clydebank, Scotland.  She was launched on 21 April 1913 and sailed on her maiden voyage to New York on 30 May 1914.  "Aquitania" was the third in Cunard Line's "grand trio" of express liners, preceded by RMS "Mauretania" and  , and was the last surviving four-funnelled ocean liner.  Widely considered one of the most attractive ships of her time, "Aquitania" earned the nickname "Ship Beautiful". RMS "Sylvania was an ocean liner built in 1957 by John Brown & Co (Clydebank), Glasgow, Scotland for the United Kingdom-based shipping company Cunard Line.  She was the last Cunard Line vessel built specifically for transatlantic crossings.  The ship was later heavily rebuilt as a cruise ship, and sailed under the names SS "Fairwind, SS "Sitmar Fairwind, SS "Dawn Princess and SS "Albatros before being scrapped in 2004.  She was renamed SS "Genoa for her last voyage. SS "Orsova" was an ocean liner owned by the Orient Steam Navigation Company.  She was built by John Brown & Company at Clydebank, Scotland in 1909 to operate a passenger service between London and Australia (via Suez Canal).  Tonnage: 12,026 tons.  Length: 163 m .  Breadth: 19 m .  Maximum speed: 18 kn .  Passengers: 1310 (consisting of 280 first class, 130 second class, 900 third class).  Maiden voyage: 25 June 1909.  Commandeered as a troopship in 1915.  On 14 March 1917, she was damaged by a mine laid by German submarine "UC-68" and beached in Cornwall, but was repaired in Devonport and resumed the passenger service on the UK to Australia route in 1919.  Her last voyage was on 20 June 1936, and she was broken up at Bo'ness, Scotland. A four funnel liner, four funnelled liner or four stacker is an ocean liner with four funnels.  The SS "Great Eastern", launched on 31 January 1858 (a full 40 years ahead of any comparable ships), was the only ocean liner to sport five funnels.  As one funnel was later removed, the "Great Eastern", by default, became the first ocean liner to have four funnels.  However, after the Great Eastern became a four funnel ship she never carried passengers so really should not be considered the first four funnel liner.  The SS "Kaiser Wilhelm der Grosse", launched on 4 May 1897, was properly the first ocean liner to have four funnels and was one of the first of the golden era of ocean liners that became prominent in the early- to mid-20th century.  The most famous four funnel liners are the RMS "Titanic", which sank after striking an iceberg on her maiden voyage on 14 April 1912, and the RMS "Lusitania", which was torpedoed on 7 May 1915 during the First World War. Commodore John William Anderson (February 14, 1899 – February 15, 1976) was the longest serving captain of the  , the fastest ocean liner in history.  In 1952, he relieved Commodore Harry Manning as master of the superliner after the recordbreaking voyage on which she broke the translantic speed record previously held by the RMS Queen Mary and captured the Blue Riband for the United States. The RMMV (Royal Mail Motor Vessel) Oceanic was the planned name of an unfinished ocean liner that was partially built by Harland and Wolff for the White Star Line.  The ship was to have been the first 1000 ft -long ocean liner.  It was intended to be the largest ocean liner for the White Star Line, thus it would have been larger than the earlier White Star giants, "Olympic", "Titanic", "Britannic", and "Majestic". RMS "Queen Mary" is a retired ocean liner that sailed primarily on the North Atlantic Ocean from 1936 to 1967 for the Cunard Line (known as Cunard-White Star Line when the vessel entered service).  Built by John Brown & Company in Clydebank, Scotland, "Queen Mary", along with  , were built as part of Cunard's planned two-ship weekly express service between Southampton, Cherbourg and New York.  The two ships were a British response to the express superliners built by German, Italian and French companies in the late 1920s and early 1930s.  "Queen Mary" was the flagship of the Cunard Line from May 1936 until October 1946 when she was replaced in that role by "Queen Elizabeth".  was a "Saxonia" class ocean liner, built in 1955 by John Brown & Company in Clydebank, Scotland for Cunard Line, for their transatlantic passenger service between the UK and Canada.  In 1963 she was rebuilt as a cruise ship and renamed RMS "Franconia, after the famous pre-war liner RMS "Franconia".  She continued to sail for Cunard until being withdrawn from service and laid up in 1971.  In 1973 she was sold to the Soviet Union's Far Eastern Shipping Company and, renamed SS "Fedor Shalyapin, cruised around Australia and the far East.  In 1980 she was transferred to the Black Sea Shipping Company fleet, and for a time returned to cruising in the Mediterranean and around Europe.  In 1989 she was transferred again, to the Odessa Cruise Company, and continued her career as a cruise ship until 1994.  She was then laid up at Ilichevsk, a Black Sea port 40 km southwest of Odessa, until 2004 when, as the Salona, she sailed to Alang, India, where she was scrapped.
Answer: RMS Queen Mary