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 (NEW) ECDIS Data Presentation and Performance Check for Mariners

In accordance with the guidance provided by the International Maritime Organization in Circular MSC.1/Circ.1503 as amended, ECDIS systems are expected to operate with Edition 4.0 of the IHO ECDIS Presentation Library from 1 September 2017.

Changes introduced in Edition 4.0 of the IHO ECDIS Presentation Library invalidate the tests contained in the ECDIS Data Presentation and Performance Checks published in 2011 which were specifically designed and developed for ECDIS using previous editions of the Presentation Library.

An ECDIS type approval certificate showing conformance with tests in Edition 4.0 of IEC 61174 demonstrates that the ECDIS operates with Edition 4.0 of the IHO ECDIS Presentation Library and therefore that the ECDIS does not have any of the identified ENC display anomalies.

An ECDIS type-approved in accordance with previous editions of IEC 61174 should also be operating with Edition 4.0 of the IHO ECDIS Presentation Library. If not it should be updated in order to comply with IMO guidance and to be free of any identified ENC display anomalies.

The subsequent guidance HERE describes the method by which mariners may check the ECDIS displays for the new ENC symbols contained in Edition 4.0 of the Presentation Library. The checks should be run at least once after installing an ECDIS.  A re-run is recommended only after a software update, system upgrade or change of equipment. 

If you detect any anomaly in the display, please contact the provider of the ECDIS and inform the IHO at info(at)

This check is not intended for, and is not suitable to be used as a Port State Inspection / Carriage compliance test for ECDIS.


















ECDIS - New References
  New normative references for the type approval of ECDIS / 


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