The story
British Tanker Company
Having initially employed independent contractors to carry its oil from Persia (now Iran) back to Europe and into India, in April 1915 the Anglo-Persian Oil Company (APOC) set up the British Tanker Company (BTC) in April 1915, with an initial capital of £100,000. The BTC placed orders with two Tyneside based shipbuilders, Armstrong Whitworth and Swan Hunter, for a total of seven steam-powered oil tankers.
The BTC's first tanker was the 3,663 gross tonnage British Emperor, launched in 1916. The names of all the first seven ships bore the prefix "British", and all future additions to the fleet have followed the same naming convention. The 60th ship was the new flagship, the 6,998 gross tonnage British Aviator, BTC's first diesel engined oil tanker, and was at that time the most powerful single-screw motor ship in the world.
Through steadying of relationships with the Shah of Iran, APOC managed to strengthen its position within the industry during the Great Depression. With the outbreak of World War II in 1939, the British government chartered the BTC's whole fleet of 93 vessels, to transport fuel for its armed forces. The fleet lost 41 ships sunk during the war, with two others so badly damaged they could only be used as storage hulks.
BP Tanker Company
In November 1954, APOC renamed itself the British Petroleum Company, and in 1956 the BTC became the BP Tanker Company (BPTC). By the end of the 1950s, the BPTC's fleet stood at 146 vessels, including supertankers of 38,000 gross tonnage (67,000 deadweight tonnes), with plans to build tankers of 60,000 gross tonnage (100,000 deadweight tonnes), which would hold more than 25 million US gallons (95,000 m3) of crude oil. A significant development of the tanker fleet was seen in the building of the British Admiral, the first 100,000 dwt tanker built in Europe and launched at Barrow-in-Furness in 1965 by Elizabeth II.
In 1981 the company was renamed BP Shipping Limited to reflect its changing role in managing the tanker fleet.
From Wikipedia’s article on BP Shipping, shared under CC BY-SA 4.0.5