OOCL Hong Kong was the largest container ship ever built at the time she was delivered in 2017, and the third container ship to surpass the 20,000 twenty-foot equivalent unit (TEU) threshold. She is also the first ship to surpass the 21,000 TEU mark. She is the lead ship of the G-class, of which five other ships were built.

She was built at the Samsung Heavy Industries, Geoje shipyard with yard number 2172 and was christened and delivered in May 2017, only two months after the christening of the first ship to break the 20,000 TEU barrier, the MOL Triumph. The six ships of the G-class were built within the same year at the same shipyard. 

Hong Kong and her sister ships—Japan, Germany, United Kingdom, Scandinavia, and Indonesia—serve the route from East Asia to Northern Europe (Shanghai, Ningbo, Xiamen, Yantian, Singapore, via Suez Canal, Felixstowe, Rotterdam, Gdansk) and (Wilhelmshaven, Felixstowe, via Suez Canal, Singapore, Yantian, Shanghai) in a 77-day round trip. 

Hong Kong has a capacity of 21,413 TEUs, which are arranged in 23 rows. She also carries 14,904 cubic metres (14,904,000 l) of fuel. Machinery on deck includes ten 35-tonne tension force electrically driven, double-drum mooring winches and two combined electrically driven anchor windlasses for raising and lowering the anchor and its 142-millimetre (5.6 in) caliber chain. Power for onboard machinery is provided by four 4,300 kW generator sets and two bow thrusters.

According to en.wikipedia