Ministry of Land, Infrastructure and Transport (MLIT) -  .

Electronic Navigation Research Institute (ENRI) - - Researches technologies of avionics such as electronic navigation, air traffic control, and satellite navigation.

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.

Kishou - - Japan Meteorological Agency.

National Institute for Land and Infrastructure Management - - National research institute on infrastructure and conservation of national land.

Public Works Research Institute (PWRI) - - Carries out research and development, technical support, and dissemination of research results in the field of civil engineering technology.