The ENC Catalogue is a geographical tool which showing the outlines of ENCs that are available from EAHC Member States.

In order for enhancing the safety of navigation, especially in view of the implementation of Electronic Chart Display and Information System (ECDIS) carriage requirements phased from 2012 and the growing number of ENCs all over the world, harmonized ENCs of good quality and wide coverage are urgently needed for mariners.

Recognizing that, EAHC have tackled and discussed among its Member States about the overlapping issue, data harmonization, ENC Production Guidelines, etc.

As one of the outcomes of the discussion, EAHC Member States are planning to jointly produce comprehensive ENC coverage of the East Asia region, or 'East Asia ENC' (a harmonized set of regional ENCs) for Usage Band 1 (i.e. for Overview).

The South China Sea is one of the world's busiest international sea lanes.

Realizing that official and high quality small scale ENCs conforming with the established IHO standard were not available for the SCS, the EAHC Member States decided to cooperate closely and resolved the situation by producing the SCS ENC in 2005.

The rapid technological changes in the field of hydrography, marine cartography and oceanography are introduced these days. And, there is a need to bridge the gap between basic knowledge and these changing technologies.

Recognising the above, EAHC CBC was formed in 2006 to identify the capacity building needs for the region.

Vietnam is not a Member State of IHO and EAHC as of 2009, but has expressed its desire to become a member of them. And, some of the major regional shipping routes transect Vietnamese waters.

Noting this, in view of promoting safe navigation, EAHC delegation (Chairman of EAHC and EAHC’s representatives) visited hydrographic organization in Vietnam, Vietnam's Maritime Safety Authority No.1 and Vietnam's Maritime Safety Authority No.2, in 2008 and 2009 so as to encourage them to join as a member of EAHC as well as IHO.

EAHC TAG is a voluntary group, possibly a core group and open to all East Asia Hydrographic Commission Member States willing to volunteer their services.

TAG provides advice on the application of guidelines formulated by the EAHC in Electronic Navigational Chart data production and Quality Assurance for the purpose of data consistency in overlapping areas and between various usage bands.

The Hydrographic Offices of three littoral states, Indonesia, Malaysia and Singapore, of the Malacca and Singapore Straits, together with Japan Hydrographic and Oceanographic Department (JHOD), jointly announced the commercial release of official MSS ENC on 20 December 2005.