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A graphical display of AIS data on board a ship. The automatic identification system (AIS) is an automatic tracking system that uses transceivers on ships and is used by vessel traffic services (VTS). When satellites are used to receive AIS signatures, the term Satellite-AIS (S-AIS) is used.
A Raymarine chartplotter. A chartplotter is a device used in marine navigation that integrates GPS data with an electronic navigational chart (ENC).. The chartplotter displays the ENC along with the position, heading and speed of the ship, and may display additional information from radar, automatic information systems (AIS) or other sensors.
MSSIS combines the data from participating nations into a single data stream through secure Internet-based servers. Through MSSIS, participating governments can view real-time AIS data from around the world in a wide range of geographic display options, including text, photo overlays, electronic charts, and Google Earth. Displays can also ...
In the United States integration of LRIT information with that from sensors and enables the Coast Guard to correlate Long Range Identification and Tracking (LRIT) data with data from other sources, detect anomalies, and heighten overall Maritime Domain Awareness (MDA). The United States implementation of this regulation is consistent with the ...
An information service is a service to ensure that essential information becomes available in time for onboard navigational decision-making. The information service is provided by broadcasting information at fixed times and intervals or when deemed necessary by the vessel traffic service or at the request of a vessel, and may include for example reports on the position, identity and intentions ...
An Electronic Navigational Chart (ENC) is a digital representation of a real-world geographical area for the purpose of Marine navigation.Real-world objects and areas of navigational significance, or to a lesser degree - informational significance, are portrayed through Raster facsimiles of traditional paper charts; or more commonly through vector images, which are able to scale their relative ...
This contrasts to the Automatic identification system (AIS) used globally on ships that transmit continuously. A short post-transmission message is sent by the radio with the vessel identity and is in the form of an encoded call sign or Maritime Mobile Service Identity , starting with number "9" and the three country-specific maritime ...
Information provided by AIS equipment, such as unique identification, position, course, and speed, is then transferred to the main Marine Traffic servers for display via the website in real time. The site uses data from OpenStreetMap on its base map, and the paid version lets users display ship locations on Nautical Charts.