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 ARGO - show graphs
Callsign: SVDM4
MMSI number: 241798000
IMO number: 523366
Navigational status: Under way (engine) (0)
Vessel class: Cargo (79)
Destination: SEA TRIALS
Location: 40°51.12' N 73°56.96' W - locator FN30AU64CL - show map
1.8 km East bearing 86° from Fort Lee, Bergen County, New Jersey, United States [?]
2.4 km Southwest bearing 231° from Inwood, New York County, New York, United States
16.0 km North bearing 17° from New York City, New York, United States
22.4 km North bearing 0° from Brooklyn, Kings County, New York, United States
Last position: 2025-08-24 12:32:50 UTC (1m37s ago)
2025-08-24 08:32:50 EDT local time at Fort Lee, United States [?]
Course: 24.300001° – heading 27°
Speed: 20 km/h
Dimensions: length 110 m width 20 m draught 6.7 m
Last path: SVDM4>ais via KD2IBE
Positions stored: 9928
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