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ECDIS back-up arrangements
The IMO performance standards for ECDIS require that adequate back-up arrangements be in place to ensure safe navigation, in case of an ECDIS failure. The function of a back-up system is to enable safe takeover of the ECDIS functions (to ensure that an ECDIS failure does not develop into a critical situation), and to provide means of safe navigation for the remaining part of the voyage.
Back-up for Australian flagged ships
For Australian flagged ships, there are two options to meet the back-up requirements for ECDIS.
A second, fully compliant ECDIS which must be independent of the main ECDIS and connected to the ships main and emergency power supply (refer SOLAS Regulation Chapter II-1). It must also be connected to systems providing continuous position fixing, gyro compass and speed and distance measuring devices. The back-up ECDIS must have the chart database and voyage plan loaded before commencement of the voyage. In confined waters, the back-up arrangements must be in operational mode.
A folio of paper charts that satisfies SOLAS carriage requirements, corrected to the latest available notices to mariners, covering the intended voyage and showing the intended passage plan.
Back-up for non-Australian flagged ships
Non-Australian flagged ships should comply with SOLAS and their flag State requirements.