Question: When was the company that built the world's first fully cellular purpose-built container ship formed?

Context paragraphs:
Hong Kong Express (ship): Hong Kong Express is a fully cellular container ship owned and operated by the German shipping company Hapag Lloyd Container Linie and one of the largest vessels in the company's fleet.  The vessel is "" Class type and is one of the largest container ships in the world.

MV Kooringa: MV Kooringa was the world's first fully cellular purpose-built container ship and was built by Australian company, Associated Steamships Pty. Ltd. in partnership with McIlwraith, McEacharn & Co and commissioned in May 1964.  It was built at the New South Wales State Dockyard at Dykes Point, Newcastle as a "custom-designed cellular container ship to handle 20-ton containers".

Emma Mærsk: Emma Mærsk is the first container ship in the E-class of eight owned by the A. P. Moller-Maersk Group.  When launched in 2006 she was the largest container ship ever built, and in 2010 she and her seven sister ships were among the longest container ships.  Officially, she is able to carry around 11,000 twenty-foot equivalent units (TEU) or 14,770 TEU depending on definition.  In May 2010, her sister ship "Ebba Mærsk" set a record of 15,011 TEU in Tanger-Med, Tangiers.

Cellular vessel: A cellular vessel is a container ship specially designed for the efficient storage of freight containers one on top of other with vertical bracings at the four corners.  The majority of vessels operated by maritime carriers are fully cellular ships.

Axel Mærsk: The Axel Maersk (or Axel Mærsk) is a Danish merchant ship.  The container ship is part of the fleet of the Maersk Line.  The container ship has a length of 352.00 m and a beam of 43.00 m .  The deadweight of the container ship is 109,000 metric tons with a gross tonnage of 93,496 gross tons, which gives enough capacity for 9,000 containers, according to the company's requirements.

Keith Tantlinger: Keith Walton Tantlinger (March 22, 1919 – August 27, 2011) was a mechanical engineer and inventor.  As Vice President of Engineering at the Fruehauf Trailer Corporation his inventions played a major role in containerization.  Working with a Fruehauf customer, Malcom McLean, they spearheaded the container ship revolution in the 1950s, Tantlinger developed much of the early technology that made modern container shipping possible while at Fruehauf.  After its initial order of containers from Brown Trailer, Sea-Land switched to containers made by the Strick division of the Fruehauf Trailer Company.  Fruehauf had been one of the dominant players in building truck bodies and trailers for a long time, and, as already described, had previously innovated in the design and construction of the early commercial semi-trailers.  President Roy Fruehauf was impressed with the idea of containerization, so in addition to manufacturing containers for Sea-Land his company agreed to make the trailer chassis that were needed, and also to provide financing to Sea-Land for the purchase of these containers and chassis.  In 1958 Tantlinger left Sea-Land and became chief engineer at Fruehauf, where he continued to work with containers.  More importantly, over the years he played a key role in the process of container standardization, working extensively on a committee of the American Standards Association (ASA) and later being critically involved with the ISO’s efforts.  His designs included the corner casting and Twistlock systems found on every intermodal container, the spreader bar for automatic securing of containers lifted on and off ships, and the ship-shore container transfer apparatus for the first cellular container ship.  In the course of his professional career, Tantlinger was granted 79 United States patents, all related to transportation equipment.  Many of his patents related to commercial highway freight trailers and transit buses.

Type C7 ship: The Type C7 ship "(Lancer Class)" is a United States Maritime Administration (MARAD) designation for a cargo ship and the first purpose-built container ship.  The vessels were constructed in US shipyards and entered service starting in 1968.  As US-built ships they were Jones Act qualified for shipments between US domestic ports.  Under the Jones Act domestic US maritime trade is restricted to US-built and flagged vessels of US owners and manned by predominantly US-citizen crews.  The last active "Lancer" container configured ships were operated as late as 2014 by Horizon Lines.  "Lancers" of the vehicle Roll-on/Roll-off (RO/RO) configuration remain held in the Ready Reserve Force, National Defense Reserve Fleet and the US Navy Military Sealift Command.  All are steam powered.

CSCL Zeebrugge: The CSCL Zeebrugge is a (fully cellular) container ship owned by Seaspan Corp.  The ship was constructed by Samsung Heavy Industries Co. Ltd Geoje and is considered one of the largest container ships in the world.  Samsung Heavy Industries Co. Ltd Geoje constructed the ship in yard 1566 and completed the "CSCL Zeebrugge" in March 2007.  It is registered out of Hong Kong.  Since its completion the CSCL "Zeebrugge" has been operated by Seaspan Ship Management Ltd. and is still currently in service.  Its sister ship is the "CSCL Long Beach".  It can carry 9,178 boxes and is 336.67m long.  It is stopping off between calls at Singapore and Rotterdam.

Adelaide Steamship Company: The Adelaide Steamship Company was formed by a group of South Australian businessmen in 1875.  Their aim was to control the transport of goods between Adelaide and Melbourne and profit from the need for an efficient and comfortable passenger service.  For the first 100 years of its life, the main activities of the company were conventional shipping operations on the Australian coast, primary products, consumer cargoes and extensive passenger services.

Clementine Maersk: Clementine Maersk is a container ship property of the largest company for maritime transport and logistics in the world - Maersk Line.  The ship was built in 2002 in the ship-yard of Odense Steel.  The container ship is large and has capacity for 6,600 TEUs according to company statistics and calculations.  The ship is designed with modern and new technologies and large cargo capacity for the year of building.  More than 7 years later we see ships, which has larger cargo capacity and smaller length and beam, which is great sign for the shipbuilding development.

Supporting paragraphs: MV Kooringa Adelaide Steamship Company
Answer: 1875