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: RTM ANCHORAGE (ETA ***00 24:60)
Location: 51°59.29' N 4°04.06' E - locator JO21AX87DE - show map - static map
6.8 km West bearing 257° from 's-Gravenzande, Gemeente Westland, South Holland, Netherlands [?]
8.4 km Southwest bearing 240° from Monster, Gemeente Westland, South Holland, Netherlands
29.1 km West bearing 285° from Rotterdam, Gemeente Rotterdam, South Holland, Netherlands
70.5 km Southwest bearing 233° from Amsterdam, Gemeente Amsterdam, North Holland, Netherlands
Last position: 2021-10-17 13:00:44 UTC (21h35m ago)
2021-10-17 15:00:44 CEST local time at 's-Gravenzande, Netherlands [?]
Course: 111° – heading 511°
Speed: 49 km/h
Dimensions: length 19 m width 6 m draught 1.2 m
Last path: MDTJ4>ais via GM7HHB
Positions stored: 1251
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 · AIS sites · Service status · Database statistics · Advertising on · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS