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 MADDIE K - show graphs
Callsign: WDN5533
MMSI number: 366998820
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: NYC
Location: 40°43.63' N 74°01.32' W - locator FN20XR74IM - show map
2.0 km Northwest bearing 317° from New York City, New York, United States [?]
4.7 km South bearing 182° from Weehawken, Hudson County, New Jersey, United States
5.8 km South bearing 179° from Union City, Hudson County, New Jersey, United States
10.5 km Northwest bearing 325° from Brooklyn, Kings County, New York, United States
Last position: 2025-07-02 20:05:15 UTC (1m19s ago)
2025-07-02 16:05:15 EDT local time at New York City, United States [?]
Course: 4.5° – heading 511°
Speed: 14 km/h
Dimensions: length 24 m width 8 m draught 3.1 m
Last path: WDN5533>ais via KD2IBE
Positions stored: 23220
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