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ECDIS and ENC Reference Publications

Practical guidance to support the use and implementation of ECDIS and ENCs. Information includes detail on ENC symbols, ENC maintenance and ECDIS integration.

ADMIRALTY Guide to the Practical Use of ENCs (NP231)

​A detailed reference guide designed to help bridge crew, trainers and those responsible for risk and safety management to gain an understanding of practical ENC use. Divided into seven chapters, content includes information on the construction of an ENC, the influence of ECDIS display settings and how they can be optimised.


This publication is available in both paper format and as an ADMIRALTY e-Nautical Publication (AENP).


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ADMIRALTY ENC Maintenance Record (NP133C)

​The ADMIRALTY ENC Maintenance Record is a quick reference folder that is designed to simplify the management of paper records, helping bridge crews to clearly show inspectors and auditors that ENCs are up-to-date and maintained.  Sections include ENC update status, AIO status, withdrawn ENCs, README file review and general maintenance, with descriptions on how to optimise available templates.


ADMIRALTY Guide to ENC symbols used in ECDIS (NP5012)

Offers detailed explanations and descriptions of both traditional and simplified forms of ENC symbols displayed in ECDIS, ensuring bridge crews possess the knowledge needed to navigate safely. ​


This publication is available in both paper format and as an ADMIRALTY e-Nautical Publication (AENP).


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ADMIRALTY Guide to ECDIS Implementation, Policy and Procedures (NP232)

Guidance on the efficient integration of ECDIS across fleets, with clear information to help fleet managers to adopt ECDIS efficiently and ensure ECDIS implementation is fit for purpose. Content also includes guidance on ECDIS policies and procedures to assist crews, fleet managers and those involved in the development of detailed ECDIS operating procedures to ensure ECDIS is adequately covered.  ​


This publication is available in both paper format and as an ADMIRALTY e-Nautical Publication (AENP).


Find out more about​ AENPs>