IEC Publication 61174 is the basis for type-approval specifications related to operational methods of testing and required test results for an IMO-compliant ECDIS. IEC 61174 is used as the basis for type-approval/certification by Maritime Safety Administrations for an IMO-compliant ECDIS. ECDIS must comply with five types of standards : As an onboard electronic equipment included in SOLAS convention, ECDIS must comply with IMO standards (Resolution A817 (19) and its amendments MSC.64(67) & MSC.86(70)), As a navigational chart display system, ECDIS must comply with the specifications for chart content and display issued by IHO (publications S-57 et S52), As an electronic equipment, ECDIS must comply with requirements published by IEC (IEC publication 61174, Committee 80-WG 7), Using telecommunications, ECDIS comes under the prescriptions of the CIRM,
wireless transmission, or by a suitable media e.g. CD. The actual updating is applied automatically by the ECDIS to its chart database. This is the preferred update method. A standard function of ECDIS is the capability of updating the ENC manually on the screen. Objects retrieved from the Notices to Mariners and applied manually to the ENC are marked on the ENC display with an additional orange indicator. 2 IMO Resolution A817(19) as amended (1.9 and Annex 7) 12 Facts about chart carriage reguirements How do I check that all updates have been applied to the official ENC? Updates to official ENCs are sequential, and the sequence is unique to each ENC. A standard ECDIS functionality is the verification that all updates in the sequence have been applied. Thus an indication will be given if an update to a specific ENC has been
annaabi.ee 
