AIS data

Image of AIS chart
​​Do you need to follow the ship traffic in Danish waters? By access to the Danish AIS system, you can get an instantaneous picture of the traffic situation.

Who can get access to AIS data?​

Everyone can be granted access to view Danish AIS data.

Types of access:


1. Web access to online AIS data

You get access via a web browser by means of a personal login. It is possible to see how AIS equipped ships are operating in almost real-time within the Danish area of coverage. If more persons need to be able to use the system at the same time, more accesses are required and you must pay for each access.

2. Online AIS data flow (proxy access) – the advanced solution

You are granted access via a small program, a "Subscriber Proxy" application, which must be installed on your computer. This solution consists in an AIS data flow of raw data. You yourself must acquire the necessary presentation program for displaying and processing data.

The solution contains advanced possibilities of filtering data, replaying incidents and storing data.

3. Historical AIS data

You can get access to continuously updated historical AIS data for free. AIS data are saved as so-called CSV files. In order to be able to use historical AIS data, you must have a special application capable of handling and converting data into a user friendly presentation.

Guidelines for retrieving historical AIS data

Microsoft Internet Explorer 11 shows only a limited number of files, i.e. only 1 page and, thus, not all files. Other browsers, such as Mozilla Firefox, show all files.

Anyway, you are recommended to use an FTP client, such as FileZilla FTP Client or the like, for downloading large quantities of data. Currently, 130 files in *.zip format are available of 1.8 TB.

Get historical AIS data

You can apply for the two above mentioned access types by sending an application to email address

Payment for AIS data

Everyone must pay for the access in accordance with the prices below:

Description of type of accessPrices as of 1 July 2018 (excl. VAT)
Web access, annual fee (cut-off date 1 July)DKK 1550,-
AIS data flow via proxy, annual fee (cut-off date 1 July)DKK 6850,-


Safety of Navigation, National Waters
+45 72 19 60 00