Kamigoto Oil Storage Company, Ltd.
Japanese company operating the Kamigoto National Oil Storage Base, a crude-oil reserve facility built on floating storage tanks off the Goto Islands, Nagasaki.
Last updated September 26, 2026
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Overview
Kamigoto Oil Storage Company, Ltd. (上五島石油備蓄株式会社) is a Japanese company headquartered in Shinkamigoto, Minamimatsura District, Nagasaki Prefecture. It operates the Kamigoto National Oil Storage Base (上五島国家石油備蓄基地), a crude-oil reserve facility whose central feature is a set of storage ships — floating tanks — rather than conventional onshore tank farms. The company describes the base as bringing together the finest of Japanese shipbuilding and marine civil-engineering technology, and it emphasizes a layered, "double and triple" safety system as well as environmental measures designed to coexist with the surrounding natural landscape. The base is one of the national petroleum stockpiling sites that Japan developed to secure crude-oil supply in the event of disruption. Its location in the Goto Islands, off the coast of Nagasaki, reflects the strategy of siting strategic reserves on remote islands with deep, sheltered water. The company's official site presents the storage ships and other principal facilities, the safety systems, and the environmental-protection measures, and it also provides information on general competitive bidding, on guided tours of the Kamigoto National Oil Storage Base and the adjacent Kapii Plaza, and on the company's mission, management policy, quality policy, and safety, health and environmental policy. Kamigoto Oil Storage is a corporate brand rather than a consumer product brand: its "product" is the safe, long-term storage of national crude-oil reserves and the operation of the associated marine and onshore facilities. Its public-facing activities include visitor programs at the base and Kapii Plaza, which serve as a window onto the facility for the local community and the wider public. The company's official links point to the Japan Organization for Metals and Energy Security (JOGMEC), ENEOS Corporation, Nippon Yusen Kaisha (NYK), Nagasaki Prefecture, and Shinkamigoto Town, indicating the institutional and industrial ecosystem in which it operates. Because the company is not a listed, consumer-facing enterprise, detailed financial and ownership information is not published on its website. Its identity is defined by its role in Japan's national oil-stockpiling system and by the engineering achievement of the Kamigoto base itself.
History
Kamigoto Oil Storage Company, Ltd. operates the Kamigoto National Oil Storage Base, one of the national petroleum stockpiling facilities that Japan established to hold crude-oil reserves against supply emergencies. The base is located in the Goto Islands in Nagasaki Prefecture, and its defining engineering feature is the use of storage ships — floating tanks — to hold crude oil, an approach that draws on Japan's shipbuilding industry and on marine civil-engineering expertise. The company's official website presents a company profile, a message from the president, and a history (沿革) section, alongside its mission and management policy, its quality policy, and its safety, health and environmental policy. The site also documents the storage ships and other principal facilities, the layered safety systems, and the environmental measures adopted to coexist with the surrounding natural environment. It provides information on general competitive bidding and on guided tours of the Kamigoto National Oil Storage Base and Kapii Plaza. The base forms part of Japan's broader national oil-stockpiling program, in which government and industry cooperate to maintain reserves. The company's official links to the Japan Organization for Metals and Energy Security (JOGMEC), ENEOS Corporation, Nippon Yusen Kaisha (NYK), Nagasaki Prefecture, and Shinkamigoto Town illustrate the institutional and corporate relationships that surround the facility. As a non-listed operator, the company does not publish detailed financial or ownership data on its website, and its public identity rests on its role in national energy security and on the engineering of the Kamigoto base.
Products and positioning
Operator of a national strategic crude-oil reserve base built around floating storage ships, combining shipbuilding and marine civil-engineering technology with layered safety and environmental measures.
Kamigoto National Oil Storage Base
A crude-oil reserve base whose principal storage is provided by storage ships (floating tanks), supported by other major facilities and layered safety systems.
Kapii Plaza
A visitor facility associated with the Kamigoto National Oil Storage Base, offered for guided tours alongside the base.
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