Electronic chart displays for use in VTMIS

The origins of the Electronic Chart Display and Information Systems (ECDIS) lie in the twin needs for efficient transfer of data within and between Hydrographic Offices and the more efficient use of hydrographic data by the main end users-ships at sea. However, as with many other developments in technology, it is now apparent that the combination of digital chart data with modern computer and communication applications can improve performance in several maritime areas. For many the logical choice for this digital chart data is that required for ECDIS, with all the benefits of agreed international standards and Hydrographic Office quality that this implies; in fact, for Vessel Traffic Services (VTS), the use of ECDIS as the Geographic Information System (GIS) has already been recommended. One of the benefits which the new technology brings is the ability for better informed supervision of remote activities at a price which companies, organisations and authorities are prepared to contemplate. This subject is explored with special reference to VTMIS (Vessel Traffic Management Information Systems) its practical limitations