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.Additional information In addition to national and international rules, regulations, the IMO model course and performance standards, the IHO has published an online publication .Another useful source of information on ECDIS is The Electronic Chart, 2nd edition, by Hecht, Berking, Büttgenbach, Jonas and Alexander (2006).
Vessels may be exempt from this obligatory carriage of ECDIS if they are taken out of operation in less than two years after the implementation date.
No requirements are specified for existing cargo vessels of less than 10 000 gross tons.
Flag states may exempt vessels which will be taken permanently out of service within two years of the implementation date.
The implementation of ECDIS installation onboard vessels will need to be type-approved and they have to issue a certificate of compliance which is used by the classification society, the port state control and vetting administration to ensure that the vessel is in full compliance with the requirement to carry type approved ECDIS with suitable back-up facilities.
In some cases you can expect that port state control or vetting administration will verify if the crew is properly trained and has a sufficient understanding of the operation of ECDIS.