1972	Tokyo Marine is founded
1973	Transportation of Fats & Vegetable Oils is Inaugurated
1975	Long term contract of Fats & Vegetable Oils on Pacific rim round trip is concluded and the Pacific Ocean trade route service starts
1977	Long term contract of Palm Oil from Malaysia to India is concluded and the Indian Ocean trade route service starts
1979	An overseas office is opened in Kuala Lumpur, Malaysia
1980	Long term contract of chemicals from Vancouver to Asia is concluded and the transportation capability of liquid chemicals is strengthened The first Tokyo Marine 17,500dwt standard type vessel "KAZE" series is launched
1981	Total operating fleet reaches 14 vessels, 180,000dwt Total yearly transportation of cargoes reaches 1,300,000MT
1982	An overseas office is opened in Vancouver, B.C., Canada Long term contract of Palm Oil & Coconut Oil from Papua New Guinea to Europe is concluded and the European trade route service starts Our leading ships on the Pacific Ocean route "KAEDE, SAKURA" are launched.
1983	Total operating fleet reaches 17 vessels, 260,000dwt Total yearly transportation of cargoes reaches 1,800,000MT
1985	The first Tokyo Marine 17,500dwt standard type vessel, which has stainless steel center tanks, "KAWA" series is launched
1988	An overseas office is opened in Singapore
1989	Unix Line Pte Ltd. is established in Singapore as a short sea trading company Total operating fleet reaches 22 vessels, 340,000dwt Total yearly transportation of cargoes reaches 2,450,000MT
1992	Implemented Quality & Safety Management System
1994	The Vessel Response Plan is duly approved by the United States Coast Guard, being in compliance with Oil Pollution Act of 1990(OPA-90)
1995	The first Tokyo Marine new chemical tankers (19,650dwt type) "GINGA" series, which have first double-skin full stainless steel tanks, starts its services "SPRING" series (16,000dwt type), which is designed for transportation of inorganic acids, is launched
1996	Became one of the Mitsui O.S.K. Line Group companies Became the largest stockholder of Tokyo Chemical Tanker Co., Ltd. Long term contract of bulk liquid chemicals from Saudi Arabia to Asia is concluded and Arabian Gulf - Asia trade route service starts Awarded certificates for ISO 9002 and ISM code from NK Total operating fleet reaches 440,000dwt. Total yearly transportation of Cargoes reaches 2,900,000MT
1997	An overseas office is opened in Rotterdam, Netherlands
1998	Unix Line Pte Ltd. is reorganized as a ship management company
1999	Acquired all the commercial activities of Tokyo Chemical Tanker Co., Ltd. Total operating fleet reaches 41 vessels, 610,000dwt. Total yearly transportation of Cargoes reaches 4,500,000MT
2000	Arabian Gulf - Europe trade route service starts
2001	Tokyo Marine Europe Limited is established in London Total operation fleet reaches 41vessels, 630,000dwt. Total yearly transportation of Cargoes reaches 5,230,000MT
2002	Awarded certificates for ISO 9001 2000 version from NK 30th Anniversary is celebrated
2003	An overseas office is opened in Seoul, Korea An overseas office is opened in Shanghai, China. The first Tokyo Marine 25,000dwt type "New GINGA" series is launched. Total yearly transportation of Cargoes reaches 5,490,000MT.
2004	Total operation fleet reaches 48 vessels, 781,000dwt. Total yearly transportation of Cargoes reaches 6,385,000MT.
2005	Nanjing Yangyang Dongyi Tankers Co., Ltd. (Joint Venture)is opened in Nanjing,China. TM Shipmanagement Co., Ltd. (ship management company)is opened in Busan,Korea. Tokyo Head Office is moved to the new address on 26th December.:8th Floor AIG Nihonbashi-Honcho Bldg., 1-1, 1-chome, Nihonbashi-Honcho, Chuo-ku, Tokyo.
2007	Total operation fleet reaches 54 vessels, 885,000dwt Total yearly transportation of cargoes reaches 7,889,000MT TM(Manila) Shipmanagement Inc. is opened in Manila, Philippine. An overseas office is opened in Dubai, U.A.E. .
2008	Total operation fleet reaches 55 vessels, 945,000dwt Total yearly transportation of cargoes reaches 8,376,000MT