It is limiting your browsing experience. Please upgrade to a modern browser.

MarineTraffic position self-reporting

Are you sailing out of the range of MarineTraffic AIS receivers? Your vessel does not have an AIS transponder? Use your smart phone on board to report the positions of the vessel to MarineTraffic.

mAIS is a mobile application that makes possible to use your mobile device to report the positions of a vessel to MarineTraffic. GPS-enabled devices (iPhone/iPad and Android) can be used to report the position, the details and the status of a vessel in case an AIS transponder is not available or the vessel is out of the range of MarineTraffic's AIS receivers.

iPhone/iPad: Open the App Store and search for 'mAIS marinetraffic' or just follow the link:

Android: Open the Android Market on your mobile device and search for 'mAIS'. Alternatively, open the current page in the web browser of your mobile device and click on the following link:

Intended use

The positions of a vessel will be reported if the application is started on the mobile device and whenever Internet connectivity is available. The position reporting will continue even if the app is running at the background on the device. This application is intended to be used only as a vessel's reporting tool and not as a personal location reporting tool. Therefore, it is important to be used only when the device is on board a vessel and it must be switched off whenever the device leaves the vessel.

This is not AIS

mAIS simulates the data transmitted by AIS transponders, however it only transmits data through the Internet and not through AIS radio-frequencies. It is clear that the information transmitted by mAIS is not visible by the AIS receivers of other vessels. It will be only displayed on MarineTraffic web site and apps. As such, mAIS is only a ship's self-reporting tool that does not substitute real AIS transmissions and it is not by any means related to the safety and navigation equipment of a vessel.

GPS-enabled Devices

mAIS will work on GPS-enabled devices such as iPhone 3GS, iPhone 4, iPad 3G and all GPS-enabled Android devices, as long as the 'Location Services' are enabled. It may not work properly on iPod or iPad WiFi, as these devices do not have built-in GPS and the position reports may be not accurate.

Battery consumption

mAIS is continuously using the GPS of your device in order to report its positions. In most cases this is a power intensive operation and it will exhaust the battery of your device in a few hours. It is recommended to have your device plugged-in whenever you are using mAIS.

How to use it

A valid account registered at is required in order to start position reporting through the mAIS application.
Follow this link to register
The app must be configured to use the registered email and password as well as all valid details of the reporting vessel. A valid MMSI number together with the other details of the vessel (such as vessel's name, call-sign, dimensions, destination, ETA, etc) must be also configured in the app.

What if the vessel does not have a MMSI number assigned?

MMSI number is the key value for position reporting. A valid MMSI number, configured in mAIS app, is required in order to send position reports to MarineTraffic. It is possible that smaller vessels have not been assigned a MMSI number by their authorities. In this case you are still able to use mAIS, after having registered your vessel for a unique vessel's ID at this form on Please note that this is not an official MMSI number and it is only used for position reporting at This number is NOT to be programmed into any radio equipment such as AIS transponders or DSC radio.

Reporting messages

The app sends two types of messages to the server of MarineTraffic: Dynamic data (coordinates, speed, course) are sent frequently (default time interval is 1 minute). Static and voyage-related data (vessel's name, dimensions, destination, eta, etc.) are sent periodically (default time interval is 10 minutes). Both time intervals are configurable. The amount of data sent over the Internet connection is very small.

E-mail notifications

In order to avoid unwanted position reporting, MarineTraffic will send e-mail notifications at your registered e-mail address, whenever your app is active. This serves as a reminder that position reporting should only be active when you are at sea and must be turned off when at land.

Bandwidth consumption

The bandwidth consumed by mAIS is minimal. Even if mAIS is configured to send position reports at the highest frequency, it will use about 150 bytes/minute, which means about 210KB in one day or 6MB for a whole month of continuous use.


Data is provided for informational reasons only and is not related by any means to the safety of navigation. provide the information collected by mAIS on smart phones 'as is' and they do not warrant its completeness or accuracy nor they commit to ensuring that the service remains available or that the material on the website is kept up-to-date. We will not be liable for any direct or indirect loss or damage arising under these terms and conditions or in connection with the information provided by mAIS application or by marinetraffic website. Consequently, the Provider, the administrators of mAIS and MarineTraffic Services and their partners cannot provide any type of guarantee neither are responsible for the correctness, validity, thoroughness and accuracy of that information published, nor for the suitability of their usage for purposes other than informational only.

Read the Terms of Use.