Question: What Irish businessman and shipbuilder was the managing director and head of the shipbuilding company that built the majority of the ships intended for the White Star Line?

Context paragraphs:
Thomas Andrews: Thomas Andrews, Jr. (7 February 1873 – 15 April 1912) was an Irish businessman and shipbuilder.  He was managing director and head of the drafting department of the shipbuilding company Harland and Wolff in Belfast, Ireland.  As the naval architect in charge of the plans for the ocean liner  , he was travelling on board that vessel during her maiden voyage when the ship hit an iceberg on 14 April 1912.  He perished along with more than fifteen hundred others.  His body was never recovered.

J. Bruce Ismay: Joseph Bruce Ismay ( ; 12 December 1862 – 17 October 1937) was an English businessman who served as chairman and managing director of the White Star Line.  In 1912 he came to international attention as the highest-ranking White Star official to survive the sinking of the company's brand new flagship RMS "Titanic", for which he was subject to severe criticism.

SS Traffic (1911): SS "Traffic" was a tender of the White Star Line, and the fleetmate to the SS "Nomadic".  She was built for the White Star Line by Harland and Wolff, at Belfast, to serve the luxury "Olympic"-class ocean liners. SS "Traffic" ferried some of the third class passengers to  for her maiden voyage.  She served as a tender for White Star, as a minesweeper for the French Navy between 1917 and 1919, and supported troop ships at the end of the First World War.  After the war she was sold to Société Cherbourgeoise Transbordement, and later renamed "Ingénieur Reibell".  She was scuttled by the French as the Germans invaded in 1940, but was salvaged and used by the Germans as an armed coastal vessel until being sunk by the Royal Navy on 17 January 1941.

MV Britannic (1929): MV "Britannic" was a transatlantic ocean liner owned by White Star Line, and was the third company ship to bear the name.  Constructed by Harland and Wolff in Belfast, the ship was delivered to White Star Line in 1930 and assigned to the Liverpool-New York line.  When White Star Line merged with Cunard Line in 1934, the ship's route changed to the London-New York line, and she later provided winter Mediterranean cruises.

Bay Shipbuilding Company: Bay Shipbuilding Company (BSC) is a shipyard and dry dock company in Sturgeon Bay, Door County, Wisconsin.  As of 2015, Bay Ships was a subsidiary of Fincantieri Marine Group and produces articulated tug and barges, OPA-90 compliant double hull tank ships and offshore support vessels.  It also provides repair services to the lake freighter fleet.  In the past the shipyard located in Sturgeon Bay has operated under several different names and traces its history back to 1918.  The company also built 40,000 ton Lake freighters in the 1970s and 1980s.  While capable of producing large freighters, the yard has not built a freighter over 20,000 tons since 1987.  Former names of the shipyards at the 2015 location of Bay Shipbuilding are: Sturgeon Bay Shipbuilding, Leathem D. Smith Shipbuilding Company and Christy Corporation.

SS Republic (1871): SS "Republic" was an ocean liner built in 1871 by Harland and Wolff for White Star Line.  It was intended to be the last of four vessels forming the Oceanic class, before two new ships were commissioned.  After a rough maiden voyage from Liverpool to New York City on 1 February 1872, the ship was chosen to be on White Star Line's first voyage on the South Atlantic and Pacific line with four other ships, destined for Chile.  In 1874, the construction of modern ships SS "Germanic" and SS "Britannic" led to SS "Republic"' s becoming the standby vessel of White Star Line.  It occupied this position for 15 years, and attempts were made to modernise it in 1888.  When SS "Teutonic" and SS "Majestic" entered service in the following year, the "Republic" became surplus to White Star's needs.

Harland and Wolff: Harland & Wolff Heavy Industries is a heavy industrial company, specialising in shipbuilding and offshore construction, located in Belfast, Northern Ireland.  Harland & Wolff is famous for having built the majority of the ships intended for the White Star Line.  Well known ships built by Harland & Wolff include the Olympic Class trio:  ,  and RMS "Britannic", the Royal Navy's HMS "Belfast" , Royal Mail Line's "Andes", Shaw Savill's "Southern Cross" , Union-Castle's  , and P&O's "Canberra" .  Harland and Wolff's official history, "Shipbuilders to the World", was published in 1986.

Cunard-White Star Line: Cunard White Star Line, Ltd., was a British shipping line which existed between 1934 and 1949, It was created as an operating company to control the joint shipping assets of the Cunard Line and the White Star Line after both companies experienced financial difficulties during the Great Depression.  Cunard White Star controlled a total of twenty-five large ocean liners (with Cunard contributing fifteen ships and White Star ten).  Both Cunard and White Star were in dire financial trouble, and were looking to complete enormous liners: White Star had Hull 844 – RMS "Oceanic III" – and Cunard had Hull 534, which would later become  .

Oceanic (unfinished ship): 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".

Manitowoc Shipbuilding Company: Manitowoc Shipbuilding Company, located in Manitowoc, Wisconsin, was a major shipbuilder for the Great Lakes.  It was founded in 1902, and made mainly steel ferries and ore haulers.  During World War II, it built submarines, tank landing craft (LCTs), and self-propelled fuel barges called "YOs".  Employment peaked during the military years at 7000.  The shipyard closed in 1968, when Manitowoc Company bought Bay Shipbuilding Company and moved their shipbuilding operation to Sturgeon Bay.

Supporting paragraphs: Thomas Andrews Harland and Wolff
Answer: Thomas Andrews