History
| 1913 | Baron Shinpachi Takahashi establishes the Sumidagawa Shipyard in Mukojima. He is the company's first president. Company is launched with Japan's first modern shipyard. |
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| 1914 | President Takahashi obtains patent for the Takahashi design Tsukasa Maru-type hull form which he invented. |
| 1923 | Kisaburo Furunoya is appointed president. |
| 1929 | Builds the Miss Sumida. It achieves the then unprecedented speed of 44 knots per hour, making it a sensation. |
| 1933 | The Japan Motor Boat Association holds a race and the Miss Sumida earns high praise and accolades. |
| 1937 | The factory is designated by the Ministry of the Navy for mass production of gun boats, launchers, cutters, etc. |
| 1941 | A new factory is built in Samezu, Shinagawa-ku. |
| 1945 | Shinobu Suzuki is appointed president. |
| 1949 | Receives an order for two patrol boats from the Japan Coast Guard, which had been established the previous year. |
| 1952 | Shigeru Sugiura is appointed president. |
| 1953 | Tsunejiro Ishiwata is appointed president. Manufactures the B-class runabout which is Japan's first FRP boat. Receives an award from the Industrial Technology Research Association. |
| 1955 | Receives a large order (66 boats) from the Thai government for 30-foot fireboats. |
| 1956 | Obtains patents for FRP hull coverings. |
| 1958 | Builds a high-speed lifeboat for the Japan Defense Agency. Achieves a new world record with a speed of 45 knots/hour being recorded for a non-leisure boat. |
| 1960 | The fishery guidance and research vessel ordered by Ibaraki Prefecture is the first to adopt a lightweight structure V-type hull form and represents a pioneering step in the development of high-speed fishing vessels. Receives an additional order to build Japan's first water jet boat. |
| 1961 | Receives an order from Shima Kanko Kisen, a public corporation responsible for specified ship maintenance, to build the first lightweight structure V-type sightseeing boat. Becomes a subsidiary of the Yokohama Warehouse Co., Ltd. Shigeichi Suzue is appointed president. |
| 1962 | Yoshio Komurasaki is appointed president. |
| 1965 | Receives an order from the Osaka City Fire Department for the world's first lightweight structure catamaran type fireboat. Builds and exhibits a 42-foot motor launch at the Motor Boat Show. |
| 1969 | Due to the construction of an expressway, head office and yard move from Mukojima, Sumida-ku, where the company had been operating for 56 years, to the current Shipbuilding Complex in Koto-ku, Tokyo. Establishes a system for the mass production of high-speed boats. |
| 1972 | Minoru Tanonaka is appointed president. |
| 1973 | Receives orders from Thailand, Philippines, other for rescue boats. |
| 1978 | Receives orders for a 160gt high-speed passenger ship from the Izu Hakone Railway and a 130gt high-tensile steel passenger boat from the Tokyo Metropolitan Sightseeing Steamship Co. |
| 1979 | Receives order from the Thai Customs Authority for a 34m all-aluminum alloy motor launch. |
| 1982 | Receives an order from the Indian government for seven units of 44m high- speed search and rescue boats. Of these, four were built by the company and three were completed in India using the PD method with technical transfer under the package deal system. |
| 1989 | Receives an order from Kumamoto Prefecture for a high tensile steel fishing control vessel (Aso). This vessel is one of the largest patrol vessels operating in Japan. When built |
| 1990 | Builds the 119 ton large scale fireboat (Miyakodori) for the Tokyo Fire Department, attracting attention for its elegant design. |
| 1992 | Minoru Tanonaka is appointed chairman. Hiroshi Ishiwata is appointed president |
| 1995 | Builds the all-aluminum alloy guard boat (Takeyori) able to reach a speed of over 40 knots/hour. |
| 1998 | Builds a 37.6m coastal sportfishing boat (Captain No. 1). Sumidagawa Shipyard enjoys great media coverage. |
| 1999 | Builds the all-aluminum alloy guard boat (Soya) able to operate at a speed exceeding 45 knots/hour. |
| 2000 | Dispatches a maintenance team during the Okinawa Summit. Receives an award from the Japan Coast Guard for the company's achievements. |
| 2001 | Adds a 15 ton fixed jib crane to manage the movement of large outfitting items. |
| 2002 | Acquires an adjacent warehouse to increase material storage capability. |
| 2003 | An automatic plasma cutting machine is installed to improve manufacturing efficiency. 3D hull structure design software is linked to the cutting machine to improve efficiency in hull design and fabrication. |
| 2004 | The shipyard shed of the first factory is expanded and rebuilt, transforming it into an all-weather indoor factory. The plant is configured to handle the construction of aluminum alloy ships and is capable of building large ships of 50 meters or more. |
| 2005 | Receives an order from the Malaysian government for a training boat. |
| 2006 | Receives an order from the Japan Coast Guard for two 30m patrol boats made of all-aluminum alloy. |
| 2007 | Receives an ODA grant from the Republic of Indonesia for a project to build patrol boats to combat piracy and maritime terrorism. |
| 2011 | Construction infrastructure is strengthened with the installation of a floating dock. |
| 2013 | Hiroshi Ishiwata is appointed chairman. Yoshihiro Yamaguchi is appointed president. |
| 2014 | Receives an order from the Republic of Djibouti for two 20m patrol boats for the Coast Guard. |
| 2015 | Hideo Ishiwata is appointed president. |
| 2020 | Renewal to new building (new headquarters). New jib crane replacement. |
| 2021 | New construction of the company's own ship. |