ECDIS is an electronic chart display system which is designed to comply the specification of IMO and    IHO. ECDIS supports three kinds of electronic chart formats to give mariners the flexibility for selecting    chart data. Thus, mariners can construct chart database based on the needs and availabilityes of chart    for the specific area.

Convenient route planning and trip management using a PC mouse       Navigation monitoring with detailed nautical information       Various alarm and indication       Collision predication and avoidance       Simultaneous multi-access control       ARPA and AIS target overlay       Automatic : track control       Conforms with the standards of IMO, IHO and IEC

IEC 61174 is associated with;    - IEC 60945 General requirements    - IEC 61162 Digital interfaces    - IHO S-52 Specification for chart content and display aspects for ECDIS       : Appendix 1 Guidance on updating the electronic navigational chart       : Appendix 2 Color and symbol specifications for ECDIS       : Appendix 3 Glossary of ECDIS-related terms    - IHO S-57 Transfer standard for digital hydrographic data    - IHO Test data set for use with IEC 61174