Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
AIS vessel SC EMERALD - show graphs
Map loading...
Callsign: MDTJ4
MMSI number: 232017739
IMO number: 732307
Navigational status: Under way (engine) (0)
Vessel class: High Speed Catamaran (49)
Destination: ANCHORAGE RTM NL (ETA ***00 24:60)
Location: 51°55.26' N 4°14.95' E - locator JO21CW91VA - show map - static map
264.0 m South bearing 191° from Maassluis, Gemeente Maassluis, South Holland, Netherlands [?]
6.4 km West bearing 279° from Vlaardingen, Gemeente Vlaardingen, South Holland, Netherlands
66.6 km Southwest bearing 221° from Amsterdam, Gemeente Amsterdam, North Holland, Netherlands
119.2 km North bearing 357° from Brussels, (Bruxelles-Capitale), Brussels Capital Region, Belgium
Last position: 2021-09-13 21:50:07 UTC (11d 18h38m ago)
2021-09-13 23:50:07 CEST local time at Maassluis, Netherlands [?]
Course: 360° – heading 511°
Speed: 0 km/h
Dimensions: length 19 m width 6 m draught 1.2 m
Last path: MDTJ4>ais via GM7HHB
Positions stored: 1237
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS