The East Asia Hydrographic Commission (EAHC) is a regional hydrographic commission within the framework of the International Hydrographic Organization (IHO). It was established in 1971, on the occasion of the inaugural meeting of the EAHC under the initiative of China, Indonesia, Japan, Republic of Korea, Philippines and Thailand. Later, DPR of Korea, Malaysia and Singapore joined the commission.
The EAHC composed of the Hydrographers of the countries bordering the Northwest Pacific Ocean, Japan Sea, Yellow Sea, Eastern China Sea, South China Sea, Philippine Sea, Malacca Strait, Northeastern Indian Ocean and adjacent waters in conformity with the Resolution S9 of the Ninth International Hydrographic Conference. The Permanent Secretariat of the EAHC is the Hydrographic and Oceanographic Department of Japan.
The main achievement has been producing of the South China Sea ENC in 2005. EAHC decided changing a structure of its organization in order to better meet the future challenges as regional developments in its technical expertise and experience at the 7th EAHC Coordinating Meeting in Republic of Korea in 2013, and then the 1st EAHC Steering Commettee Meeting was held in Malaysia in 2014 replacing the EAHC Coordinating Meeting.