The area of present-day Sasebo was part of ancient
Hizen Province. It was a small fishing village under the control of nearby
Hirado Domain until shortly after the start of the
Meiji period.
Imperial Japanese Navy Admiral
Tōgō Heihachirō, when surveying the coasts of northwestern Kyūshū for the site of a navy base, selected this location based on its protected, deep-water harbor, geographic proximity to
China and
Korea, and the presence of nearby
coal fields.
Sasebo Naval District, founded in 1886, became the major port for the Japanese navy in its operations in the
First Sino-Japanese War and
Russo-Japanese War. It remained a major naval base to the end of
World War II. Along with the base facilities, the navy also constructed the
Sasebo Naval Arsenal, which included major shipyards and repair facilities. After the end of the war, part of the base facilities were taken over by the
United States Navy, which formed
U.S. Fleet Activities Sasebo. Some parts of the base are shared with the
Japan Self-Defense Forces, in particular the
JMSDF. The primary base of the
JGSDF's
Western Army Infantry Regiment is also among the facilities there. The village of Sasebo was established on April 1, 1889 with the creation of the modern municipalities system. It was raised directly to city status on April 1, 1902. Sasebo annexed the neighboring villages: Sase, Hio and Hirota on April 1, 1927 and town of Ainoura on April 1, 1938. The city had 206,000 inhabitants in 1945 and suffered severe damage by United States
bombing on June 29, 1945, during
World War II. 48% of the city was destroyed. Sasebo was one of the original 17 targets considered by the United States as a target for the
atomic bomb intended to end the war. The city continued to grow by annexing neighboring municipalities: Ono, Minamise, Nakazato, Saki (May 27, 1942), Yuzuki and Kuroshima (April 1, 1954), Orioze, Egami, Sakihario (April 1, 1955), Miya (August 1, 1958). On April 1, Sasebo was designated a
special city with increased local autonomy. This designation was raised to
core city on April 1, 2016. • On April 1, 2005, the towns of
Sechibaru and
Yoshii (both from
Kitamatsuura District) were merged into Sasebo. • On March 31, 2006, the towns of
Kosaza and
Uku (both from
Kitamatsuura District) were merged into Sasebo. • On March 31, 2010, the towns of
Emukae and
Shikamachi (both from
Kitamatsuura District) were merged into Sasebo. ==Government==