500 GT) with a transitioning period as shown below.The new carriage requirement is for one ECDIS with suitable back up arranagements, which can be fulfilled either by a type-approved backup ECDIS or official, up-to-date paper charts.
The ECDIS logs the navigation data and chart usage during the voyage and this data is available for reporting after the voyage is finished. The official charts are known as Electronic Navigational Charts (ENC) and Admiralty Raster Chart Service (ARCS) .
The charts are made and distributed by the hydrographic offices through a distribution network and the vessel has to subscribe to the chart service.
This all saves time and resources on the bridge, which can be used for other important tasks.
When performing the voyage the navigator can be advised by the ECDIS if he is in his planned track and if he is approaching shallow water and dangerous areas.
Another possibility is to upgrade your bridge system to include additional functions such as TCS made possible by ECDIS.