1957	Dowa Kaiun K.K. founded with initial capital of 10.0 million yen, with offices in Marunouchi, Tokyo. Main business: transporting coal from Kyushu
1959	Increased capitalization to 15.0 million yen. Relocated headquarters office to Sendai Kogyo Building, Nihonbashi, Chuo-ku, Tokyo. Signed general agency contract for Japan with Taiwan Marine Shipping Company, Ltd.
1961	Increased capitalization to 35.0 million yen. Relocated headquarters office to Shin-Kyobashi Building, Chuo-ku, Tokyo. Launched Japan-Hong Kong-Singapore round-trip consolidation and agency business.
1962	Relocated headquarters office to Tamachi Building, Akasaka, Minato-ku, Tokyo. Signed Japan general agency contract with TaiYoung Shipping Co., Ltd. of the Republic of Korea.
1963	Received project order for Port of Jakarta special port facility project in Indonesia.
1964	Increased capitalization to 50.0 million yen. Opened company-staffed branch office in Indonesia.
1965	Increased capitalization to 100.0 million yen. Relocated headquarters office to Matsudaira Building, Akasaka, Minato-ku, Tokyo.
1966	Relocated headquarters office to No. 11 Mori Building, Nishi-kubo Akefune-cho, Shiba, Minato-ku, Tokyo. Took over as sub-agency of Asia Trans, the general agent for 6 liner operating companies, and launched round-trip consolidation agency operations. Launched Japan general agency operations for Indonesian salt company vessels.
1967	Increased capitalization to 120.0 million yen.
1971	Increased capitalization to 168.0 million yen. Joint development with Sabah Forestry Co. of the forest district in Ekadesa Karya, Malinau district, Tarakan, Sabah State, Malaysia.
1972	Launched consolidation and shipping agency operations on the Japan-Indonesia-Japan alliance route as the Japan general agent for the Admiral Line, a member of the Indonesia National Line (INL).
1974	Signed Japan general agency contracts with the P.T Sarunta Wayaraya Line, the P.T Bhineka Line, the P.T Bahana Utama Line, the P.T Rimba Segara Line, and the P.T IndoPacific Line of Indonesia. Signed deferred payment export contracts at the request of these Indonesian shipping companies.
1975	Increased capitalization to 174.0 million yen. Increased activity in lumber transport under the Lumber Transport Agreement (LTA) between INSA and NFA led to closer relations with Indonesian shipping companies and a variety of business projects.
1976	Increased capitalization to 185.22 million yen.
1979	Merged with Dowa Kaiun K.K. and founded a new company, Dowa Line Co., Ltd., capitalized at 274.09 million yen. Fumio Takigawa was appointed Representative Director and Chairman of Dowa Line.
1980	Opened company-staffed office of Dowa Line in New York City.
1981	Founded Dowa Line America Co., Ltd., with offices on the 22nd floor of the World Trade Center.
1984	Relocated Dowa Line America offices to 919 3rd Ave., New York, NY.
1986	Started contract work in food grain transport for the Japan Food Agency on the M/V Maria Flores (27,000 DWT).
1987	Relocated Dowa Line America offices to Fort Lee, NJ. Founded Bulk Fleet Chartering, LLC (USA).
1991	Constructed company-owned building in Englewood Cliffs, NJ and relocated Dowa Line America corporate offices there.
1993	Broke ground on company-owned Dowa Line Building in Minato-ku, Tokyo.
1996	Executive Managing Director Kazuo Takigawa appointed Representative Director and President.
2001	Dowa Line America receives ISO-9001-2000 certification. Dowa Line America celebrates its 20th anniversary in business with a commemorative reception at the Top of the World on the top floor of the World Trade Center in New York. Indonesia company-staffed office closed.
2004	Dowa Line America fleet logs over 500 total annual voyages.
2006	Company founder, Representative Director and Chairman Fumio Takigawa, passed away.
2008	Dowa Line celebrates its 50th anniversary in business with a commemorative reception at the Hotel Okura in Tokyo. Constructs unmarried employee housing in Ichigaya Sadohara, Shinjuku-ku, Tokyo.
2009	Former company headquarters building expropriated by Tokyo Metropolitan government for No. 2 Kanjo Highway construction. Broke ground on new Dowa Line headquarters building in Minato-ku, Tokyo.