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 | Ministry of Land, Infrastructure and Transport (MLIT) - Official ministry page with its organization, objectives, policies, and bureau activities. Adobe Acrobat Reader required.
|  | Electronic Navigation Research Institute (ENRI) - Researches technologies of avionics such as electronic navigation, air traffic control, and satellite navigation.
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 | The Geographical Survey Institute (GSI) - A national surveying and mapping organization of the MLIT that conducts basic survey and mapping and instructs related organizations to clarify the conditions of land in Japan.
|  | Japanese Maritime Safety Agency (JMSA) - Maintains public order, performs oil pollution response, search and rescue, hydrographic surveys, oceanographic observations and navigational charts, publications, and related information.
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 | Kishou - Japan Meteorological Agency.
|  | National Institute for Land and Infrastructure Management - National research institute on infrastructure and conservation of national land.
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 | Public Works Research Institute (PWRI) - Carries out research and development, technical support, and dissemination of research results in the field of civil engineering technology.
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