PSA International Pte Ltd, formerly Port of Singapore Authority is one of the world's largest port operators.
In 1863, Tan Kim Ching, Singapore's leading Chinese merchant at that time, came up with $120,000 to found and set up the Tanjong Pagar Dock Company (the forerunner of today's Port of Singapore Authority), purchased two steamships, "Siam" and "Singapore" and promoted the Tanjong Pagar Dock Co.
The Port of Singapore Authority was formed on April 1, 1964 to take over the functions, assets and liabilities of the Singapore Harbour Board. On August 25, 1997, a parliamentary bill was passed to corporatise the Port of Singapore Authority, and PSA Corporation Ltd (simplified Chinese: 新加坡港务集团有限公司) was corporatised on October 1, 1997. The company kept its name as PSA but it is no longer an acronym.
PSA restructured in December 2003, with PSA International Pte Ltd (simplified Chinese: PSA国际港务集团有限公司) becoming the main holding company for the PSA Group of companies.