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ADMIRALTY Vector Chart Service

The world's most chosen ENC service for ECDIS

Vector Chart Service
Vector Chart Service

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The ADMIRALTY Vector Chart Service (AVCS) is the world’s leading official digital maritime chart service, with over 17,000 official Electronic Navigational Charts (ENCs) to help bridge crews navigate safely and efficiently whilst meeting flag and port State requirement​s.

Key features of AVCS include:

  • ​Global maritime ENC coverage with more routes and ports than any other competing service

  • Unique ADMIRALTY Information Overlay (AIO) for additional passage planning information​​​​​​

  • Weekly updates available via email, online or on DVD to ensure ongoing safety and compliance

  • Delivered in industry standard S-63 / S-57 formats, guaranteeing compatibility with all ECDIS sold today – even in a mixed fleet

  • Online version now available for shore-based activities.  

Find out more information about AVCS Online >

Find out more about the features of AVCS >

Here to h​elp​

Once you’ve chosen AVCS we can offer you guidance to help you get the most from the service. Support items include installation guides, YouTube tutorials and migration guides, with further support available from distributors and our in-house customer service team.

Find out more about support for AVCS >


Available around the world

We distribute our products through a global network of experienced and trusted ADMIRALTY Distributor. If you are interested in finding out more about AVCS, please contact your preferred distributor or visit the find a distributor page to locate your closest distributor.

Find an ADMIRALTY Distributor >

More routes, m​​ore ports

The ADMIRALTY Vector Chart Service (AVCS) provides the widest official ENC coverage available, enabling ships to navigate on ECDIS for the entirety of most major routes on a single chart service. This coverage includes 4,000 of the biggest ports worldwide, of which we offer unique coverage for over 70.


Ongoing safety and c​​ompliance

All AVCS customers are supplied with weekly electronic updates via internet download, email or disc - ensuring that bridge crews and shore-based teams have access to complete and up-to-date information. These electronic updates reduce time and effort spent making manual updates to paper charts, minimise the risk of human error and help to ensure compliance with Flag and Port State requirements.



 AVCS contains accurate maritime data that meets industry S-63 and S-57 formats


Carriage-compliant ENCs

All ships using AVCS on-board receive a UKHO certificate. This certificate can be used for local inspections and confirms that all Electronic Navigational Charts (ENCs) in AVCS satisfy the chart carriage requirements of SOLAS Chapter V.

AVCS meets the latest mandated data protection standard from the International Hydrographic Organization (IHO), which helps to reduce the risk of both data piracy and the distribution of unofficial, dangerous data to mariners.


ADMIRALTY Information Overlay, unique extra nav​igational data

The ADMIRALTY Information Overlay (AIO) aids navigators at the crucial passage planning stage.

It contains ​ADMIRALTY paper chart Temporary and Preliminary Notices to Mariners (T&P NMs) where the information is not encoded into the underlying ENC. It also contains ENC Preliminary Notices to Mariners (EP NMs), which highlight  navigationally significant differences between ENCs and ADMIRALTY paper charts.

AIO can be displayed as a single layer on top of ENCs on the majority of ECDIS currently being sold, and also on back-of-bridge software. All AVCS customers receive the unique AIO at no extra cost.



 AIO displaying a temporary notice for the local paper chart. These notices can help crews to identify areas of navigational uncertainty during passage planning.


Compatible with all type-approved ECDIS ma​​​​kes

AVCS is delivered in industry standard S-63 / S-57 formats, guaranteeing compatibility with all type-approved ECDIS sold today. Please see the Specifications tab for a list of systems that are also compatible with the ADMIRALTY Information Overlay.

Find out more about ECDIS compatibility here >

Find out more about the IHO's ECDIS and ENC Standards here ​>​


Purchase options that suit you

For maximum convenience, AVCS ENCs can be ordered in predefined transit, regional or port folios (groupings of ENCs). New ENCs are automatically added as soon as they become available, ensuring your ships always have the latest data. You can also combine AVCS folios with your choice of individual ENC charts for unrivalled coverage and flexibility.​

Alternatively, all ENCs can be bought on an individual, chart-by-chart basis for precise coverage and voyage flexibility. Simply buy the licences to unlock the charts needed for a voyage, when and for as long as they are needed. Most ENC-issuing producers allow durations of 3, 6, 9 or 12 months.​

To offer further flexibility in navigation, Pay As You Sail (PAYS) subscriptions are available for AVCS. A PAYS subscription automatically purchases a 3 month licence for each ENC under the vessel's track, so you only pay for those used during the passage. The vessel is also supplied with a worldwide permit set that allows full use of ENC data for planning purposes.

ECDIS and ADMIRALTY Information Overlay compati​​bility

All ECDIS equipment must undergo a type-approval certification process to ensure it meets IMO Performance Standards for ECDIS. AVCS is compatible with all ECDIS and ECS (Electronic Chart Systems) that meet these requirements. You can find out more about type-approval and get advice on ECDIS implementation by talking to an ADMIRALTY Distributor.

Find an ADMIRALTY Distributor >


The following table lists display systems that currently support both AVCS and the ADMIRALTY Information Overlay (AIO).

​Manufacturer​Model​AIO Compatible ECDIS Version*
​ChartWorld​eGlobe ECDIS 40​00.10.207 ECDIS Kernel v 5.12
​Danelec​​DM800 ECDIS G2
FMD 3100
FMD 3200
FMD 3300
Jargoon​SEALL ECDIS1.2
ECDIS Application 2.02
Maintenance no. v56
Chart Portfolio 2.02
Kongsberg​K-Bridge ECDIS 7.1.x
K-Nav ECDIS 7.1.x
OSI Maritime Systems Ltd.
ECPINS Warship
​ECPINS Submarine​
PC Maritime​Navmaster7.1.0.20​​
TickV1.0.15.32, V2.0.x.x
TickV1.0.15.32, V2.0.x.x
Northrop Grumman Sperry Marine​VisionMaster FT5.6​​
Tokyo Keiki​EC-8100

Totem Plus​Totem ECDIS2.00
​Navi-Sailor 4000 ECDIS
Navi-Sailor 4000 ECDIS MFD
Multifunctional Display; NAVI-SAILOR 4000 ECDIS


Wuxi Nuorui Technologies​

* AIO compatible ECDIS version numbers indicate the minimum ECDIS software version required to view the AIO.

Below you'll find information to help you update AVCS. 


Updating AVCS using the internet

The AVCS Online Updating Service (AVCS OUS) uses software to provide immediate access to the latest digital chart updates for subscribers of the AVCS service. The service is complimentary to the DVDs available for AVCS and offers quick access to the most up-to-date information. 

Download the AVCS Online Updating Service software 


Cancelled and replaced ENCs

Periodically, changes to the ENC coverage available worldwide make it necessary to cancel and replace ENC Units in AVCS. The below Excel files contain a full list of replacements for cancelled ENCs, as well as ENCs that have been withdrawn for safety reasons:​

Replacements for Cancelled Cells 

Withdrawn Cells 


AVCS Support Film​​s 

Guides to help you download updates for AVCS, as well as complete installation, are listed on our Support Tab.

Find out more about support for AVCS >


Downloading updates via the FTP site

We supply all AVCS customers with​  weekly electronic updates via Internet download or DVD. To obtain AVCS updates via the Internet, you can use our public FTP website with the following login credentials (the username and password details are case sensitive).

URL: FTP://​

Username: ukhopublic

Password: Public12345

FTP support removed from Google Chrome & Microsoft Edge Browsers

Please note that the Google Chrome and the Microsoft Edge browsers no longer supports encrypted FTP connections (FTPS) or proxies. 

Below you will find information to support you in your use of the ADMIRALTY Vector Chart Service, including detailed user guides and support films. If you cannot find the answer to your questions, please see who to contact below for more details.


AVCS User Guides

Download the AVCS User Guide  

Download the ADMIRALTY Information Overlay (AIO) User Guide

Download AIO Letter for Compliance Inspectors 


READM​E file

Information on the use of ENCs in ADMIRALTY services. This information may be navigationally significant and should be reviewed for changes when you update your ECDIS.

Download the README.txt


Important information for A​VCS users

Includes information on general cautions about the use of ENCs within ECDIS.

Download Important Information for AVCS Users 


T&P NMs in ENCs

Not all ENC producers include Temporary and Preliminary (T&P) Notices to Mariners (NMs) in their ENCs. The following table lists the confirmed status of T&P NMs in the ENCs that are available in AVCS and the ADMIRALTY ECDIS Service.

Download the current status of T&P NMs in ENCs 


ENC Update Status


AVCS Installation Guides for ​​ECDIS

The following guides are designed to help you install AVCS on specific ECDIS types. Installation films are also available on our YouTube Channel for a select range of ECDIS.​

ManufacturerInstallation GuideInstallation Guide Films

1.20 – 1.50 Series  ​
DMG800 ​​ 


eGlobe G2​   

Installation Films 


​​FEA 2​107/2807​ 

FMD 3000 series​​ ​​

Installation Films 

Installation Films


JAN-701B/901B Version 02.02​ 

​​JAN-7201/9201 Version 01.20.026 ​

Installation Films 

Kelvin Hughes

Installation Films 


Installation Films 


​​​ECDIS 900​  

Installation Films 

Northrop Grumman Sperry Marine

Marine VisionMaster Version 

Installation Films 

OSI Maritime Systems

Installation Films 

PC Maritime


Installation Films 

Raytheon Anschutz

Installation Films 

SAM Electronics

ChartPilot 1100 Version 6.14 ​​

ECDISPILOT Version​   

ECDISPILOT Version​  ​


Installation Films ​​ 

Installation Films   ​


Telko ECDIS  

Installation Films 

Tokyo Keiki

Tokyo Keiki EC 8x00​ Version 1.3.0  

Installation Films 

Totem Plus

TOTEM 00035 Version  

Installation Films 


Navi-Sailor 4000 ​Version 2.00.010​  

Installation Films 

AVCS Base Release Schedule​ and Distribution of ENC Producers

Issue date: Week 4, 27 January 2022

​DVD 1

​Base 1

​Estonia EE, Finland FI, France FR, Latvia LV, Lithuania LT, Sweden SE.
​Base 2

​Albania AL, Norway NO. Poland PL. Additional datasets from Taiwan 1U.
​Base 3

Solomon Islands SB, ​Turkey TR, United Kingdom GB.
​Base 4

​Croatia HR, Denmark DK, Georgia GE,  Greece GR, Italy IT, Malta MT, Montenegro ME, Portugal PT, Romania RO, Russia RU, Slovenia SI, Spain ES, Ukraine UA.
​Base 5

​DVD 2
​Base 6

​Canada CA.
​Base 7

Australia AU, Bahrain BH, Burma (Myanmar) MM, Cook Islands (CK), East Asia Hydrographic Commission EA, Egypt EG, India IN, Indonesia ID, ​Iran IR, Israel I1, Malacca & Singapore Straits MS, Malaysia MY, New Zealand NZ, Niue NU, Oman OM, Pakistan PK, Papua New Guinea PG, Philippines PH, Samoa (WS), Singapore SG, South Africa ZA, Sri Lanka LK, Thailand TH, Tokelau (TK), Tonga TO, Tunisia TN, Vietnam VN/V1/V2.
​Base 8

​Argentina AR, Bangladesh BD, Belgium BE, Brazil BR, Chile CL, Colombia CO, Cuba CU, Ecuador EC, Germany DE, Iceland IS, Mexico MX, Netherlands NL, Nigeria NG, Panama PA, Peru PE, Suriname SR, Uruguay UY, Venezuela VE.
​Base 9​China C1, Hong Kong C2, Macau C3, Japan JP, Korea (Republic of) KR.



Who to contact?​​

If none of these resources can resolve any existing issues, please contact the ADMIRALTY Distributor that you purchased AVCS from. If you require any assistance from the UKHO please see the contact us section on the website for further information.

You can purchase charts in AVCS as individual ENCs, or in folios covering a geographic region. These ENCs and folios, which are outlined below, can be purchased on a subscription basis for periods of 3, 6, 9, or 12 months where countries allow. Additional coverage can also be purchased at any time, and each chart has its own subscription period.

Transit Folios

These folios provide ENC coverage at a scale appropriate for vessels not engaged in local trade, saving you the expense of purchasing detailed coverage where it's not required. Transit folios also provide increased coverage of major choke points, such as the Suez Canal and Malacca Strait. 

View a Transit Folio example >


Regional Folios

These cover a much smaller geographical area than Transit Folios and include all Coastal and some Approach ENCs, where coastal coverage is not available. Regional Folios are designed for local and coastal trade, where more detailed coverage of complex coastal waters is required. They do not include Port Approaches or Entry.

View a Regional Folio example >


Port Folios

These typically comprise of Approach, Harbour and Berthing ENCs, grouped together into a single sales unit.

View a Port Folio example >


Individual ENCs

Instead of purchasing your ENCs as folios, it is also possible to buy ENCs individually, allowing you complete control over your chart holdings. Most ENCs in the AVCS service can be selected on a chart-by-chart basis and typically contain ENC data approximately equivalent to that of a paper chart.



Combine AVCS Folios of your choice with individual ENC charts for unrivalled coverage and voyage flexibility.


Choosing, ordering and m​​anaging AVCS

AVCS is sold through an international network of experienced and trusted distributors. Please contact your ADMIRALTY Distributor to discuss the right package of charts for you.

If you don't have a preferred distributor, then you can search a list of worldwide ADMIRALTY Distributors with our find an ADMIRALTY Distributor page.

Find an ADMIRALTY Distributor >

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.

Find out more about the ADC > ​

ADMIRALTY Vector Chart Service (AVCS) Online is a shore-based version of the world’s leading maritime chart service that is used on board most ships trading internationally. 

Find out more information about AVCS Online on our dedicated page > 

 AVCS Online in the office environment