Sumida, Tokyo International schools: Sumida maintains sister-city relationships with Seodaemun-gu, Seoul, South Korea, and with Shijingshan District, Beijing, China. Sumida, Tokyo , literally "Ink Field", is a special ward located in Tokyo Metropolis, Japan. The English translation of its Japanese self-designation is Sumida City. As of May 1, 2015, the ward has an estimated population of 257,300, and a population density of 18,690 persons per km². The total area is 13.77 km². Sumida is in the northeastern part of the mainland portion of Tokyo. The Sumida and Arakawa are the major rivers, and form parts of its boundaries. Its neighbors are all
Japanese gunboat Sumida (1903) the Allies. "Sumida" saw combat service in the Second Sino-Japanese War, beginning with the First Shanghai Incident in 1931. "Sumida" continued to operate on the Yangtze River in China during the early 1930s, but was already considered obsolete, and was struck from the navy list on March 1, 1935. She was scrapped on March 31, 1935 at Shanghai. Japanese gunboat Sumida (1903) "Sumida" was the first gunboat in the Imperial Japanese Navy inventory designed specifically for inland river service. The need for such a vessel to operate on the rivers of the Asian mainland to protect Japanese commercial interests at