AENPs are updatable, electronic versions of official ADMIRALTY Nautical Publications

ADMIRALTY e-Nautical Publications (AENPs) are official ADMIRALTY Nautical Publications available as e-books, accessed only using our ADMIRALTY e-Readers 1.3 and 1.4 or on the AENP Integrated Viewer. Easy to use and update, they bring improved efficiency, accuracy and access to information bridge officers need. 

  • ​​Weekly Notices to Mariners applied accurately in seconds to ensure ongoing safety and compliance.​

  • ​90 official ADMIRALTY Nautical Publications available in an electronic format. The range includes Sailing Directions (Pilots), Ocean Passages for the World, the Nautical ​​​​Almanac, the Mariner’s Handbook and many more.

  • Approved for use by the Flag States of over 80% of ships trading internationally, with clear display of NM updates to aid inspections.​


Fast and accurate NM updates

AENPs are updatable, electronic versions of official ADMIRALTY Nautical Publications such as Sailing Directions (Pilots) and the Nautical Almanac. This means that bridge crews can download and apply electronic weekly Notices to Mariners (NMs) updates to publications in just a few seconds every week, improving efficiency and accuracy on board during passage planning tasks.

Easier access to important information

Simple search functionality gives users quick access to important planning information. The AENP Viewer snapshot function helps bridge crews to view, save and print AENP pages as well as any applicable NMs and addendums, which can be used to support passage planning.​


Do you want to see AENPs in action? Our product demonstration film shows you how easy it is to update ADMIRALTY Sailing Directions (Pilots) as an AENP in comparison to its paper equivalent


Carriage compliance

AENPs are designed to meet SOLAS carriage requirements, contain the same official information as their paper equivalents, and have been approved by the Flag States of over 80% of ships trading internationally. AENPs can also aid inspections by clearly showing when a publication was last updated with weekly NMs.

A growing list of ADMIRALTY e-Nautical Publications

The expanding range currently includes 90 electronic versions of official ADMIRALTY Nautical Publications. 

  • ​​Sailing Directions​​​ (76 volumes)

  • ​Ocean passages for the world (NP136 volumes 1&2)​ ​

  • ​​The Mariner’s Handbook (NP100)​​

  • The Nautical Almanac (NP314)​​

  • ADMIRALTY Guide to the practical use of ENCs (NP231)​

  • ADMIRALTY Guide to ECDIS implementation, policy and procedures (NP232)​

  • ADMIRALTY Guide to ENC symbols used in ECDIS (NP5012)​​​

  • How to Keep your ADMIRALTY Products Up-to-Date (NP294)​

  • IALA Maritime Buoyage System (NP735)​​

  • Symbols and Abbreviations Used on ADMIRALTY charts (NP5011)​

  • Cumulative List of ADMIRALTY Notices to Mariners (NP234A & NP234B)

  • Annual Summary of ADMIRALTY Notices to Mariner​​s (NP247 volumes 1&2)

Available through ADMIRALTY e-Readers 1.3 and 1.4

​ADMIRALTY e-Nautical Publications are available to use in ADMIRALTY e-Readers 1.3 and 1.4 or through the AENP Integrated Viewer (also called AENP Software Development Kit) only. They are not accessible on any other e-Readers or in any other formats. All easy-to-use applications help bridge crews by simplifying updating, viewing and reporting tasks.



Approved by the Flag States of almost 80% of ships trading internationally, AENPs provide the same level of compliance as traditional ADMIRALTY paper-based publications, for ships trading under these Flag States. Where we are aware that a Flag State Authority (FSA) has issued documentation on the acceptance of UKHO's digital nautical publications or provided guidance on their use, we have listed it in the table below. ​

Important notes:

  • ​​FSAs who accept UKHO's digital nautical publications, but have not issued any specific requirements, may not be listed​

  • If it is not clear whether a FSA accepts UKHO's digital nautical publications as satisfying carriage requirements then shipping companies should contact their FSA or the appropriate Recognised Organisation (RO)

  • ​For more information and guidance on the safe and effective use of UKHO's digital nautical publications, please click here

  • ​For more information and guidance on International Maritime Organization (IMO) requirements on carriage of publications on board ships please read MSC-MEPC.2/Circ.2

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Below you'll find important information regarding compatibility. If you require further information please contact your ADMIRALTY Distributor. 

Find your ADMIRALTY Distributor 

Recommended minimum requirements

Our recommended minimum requirements to run AENPs via the ADMIRALTY e-NP Reader 1.4 are as follows:

  • Software Operating System (OS): Windows 8.1, Windows 10 (32 & 64 bit versions) and Windows 11 (64 bit version)

  • Hardware: CPU Pentium IV or later

  • Processor: 1 gigahertz (GHz) or faster processor or System on a Chip (SoC)

  • RA/Memory: 1 GB for 32-bit or 2 GB for 64-bit

  • Hard drive/disc space: 16 GB for 32-bit OS 32 GB for 64-bit OS

  • Graphics card: DirectX 9 or later with WDDM 1.0 driver

  • Service pack: 1

  • .Net Framework: Minimum of 4.7.2

  • Monitor/Display: 1280 x 1024 resolution

  • Printer: Colour Printer

  • Memory stick: 1 GB+

  • USB port: v1.2 compatible or later

Our recommended minimum requirements to run AENPs via the ADMIRALTY e-Reader 1.3 are as follows:

  • Software Operating System: Windows 7 (32 & 64 bit versions) and Windows 8.1 64 bit​

  • Hardware: CPU Pentium IV or later

  • Memory: 512 MB as a minimum, 1 GB recommended

  • Monitor/Display: 1280 x 1024 resolution

  • Disk space: 5 GB

  • USB port: v1.2 compatible or later

  • Printer: Colour Printer

  • Memory Stick: 1 GB+

Important notes:

  • ​​​It is recommended that your chosen computer also has up-to-date antivirus software installed​

  • The UKHO will not be in the position to support the ADMIRALTY e-Readers 1.3 and 1.4, and the associated AENPs used, on operating Systems where Microsoft support has been withdrawn


Support for ADMIRALTY e-Nautical Publications

Below you will find information to support you in your use of ADMIRALTY e-Nautical Publications, including user guides and support films.

If you cannot find the answer to your questions, then please see who to contact below for more details.

AENP user guides


Includes information on getting started, installation, updates, maintenance, uninstalling and other support topics.

A​ENP support films


Guides to activation, downloading updates, creating certificates, viewing books and uninstalling the ADMIRALTY e-Readers 1.3 and 1.4 are all available on our YouTube channel: ADMIRALTY TV.

Downloading updates via the File Share Service


We supply all AENP customers with weekly electronic updates via internet download, email or ADP Update DVD.

To obtain AENP updates via the internet, you can use our public File Share Service website at https://fss.admiralty.co.uk. Please note that new users will need to register to use the site.

ADP Updates and Software DVD


ADMIRALTY e-Nautical Publications can be updated through ADMIRALTY e-Readers 1.3 and 1.4 by using the ADP Updates and Software DVD. The ADP Updates and Software DVD is released weekly, and contains all AENP editions and Notices to Mariner (NMs) updates, along with user guides and support films

How to use the ADP Updates and Software DVD


Includes information on updating your ADP and e-Readers 1.3 and 1.4 applications using the ADP Updates and Software DVD.

Who to contact?​​


In the first instance, please contact the Distributor that you purchased AENPs from. If they are unable to help then the UKHO Customer Services Team can be contacted on customerservices@ukho.gov.uk or phone +44 (0) 1823 484444.



All our AENPs are licensed on a subscription-basis, to be used on ADMIRALTY e-Readers 1.3 and 1.4 or through the AENP Viewer. 

The majority of AENPs are licensed on an annual basis - noting that NP314 is only purchasable on a 24-month basis.

Choosing, ordering and managing AENPs AENPs are sold through an international network of experienced and trusted distributors.

Please contact your ADMIRALTY Distributor to discuss the right package of publications for you and the appropriate pricing model. If you don’t have a preferred distributor, then you can search a list of worldwide ADMIRALTY Distributors on our find an ADMIRALTY Distributor page.​

The ADMIRALTY Digital Catalogue (ADC) can also provide you with a comprehensive and up-to-date reference of current ADMIRALTY Maritime Data Solutions, with functionality that allows you to search for products by type, scale or a defined route.