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 ROBERT IV - show graphs
Callsign: WDC3892
MMSI number: 367015880
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: NEW YORK HRB
Location: 40°39.85' N 74°03.96' W - locator FN20XP29BK - show map
4.1 km East bearing 97° from Bayonne, Hudson County, New Jersey, United States [?]
7.5 km Southwest bearing 222° from New York City, New York, United States
9.2 km Northwest bearing 319° from Bensonhurst, Kings County, New York, United States
9.9 km West bearing 279° from Brooklyn, Kings County, New York, United States
Last position: 2026-01-11 19:21:07 UTC (22h11m ago)
2026-01-11 14:21:07 EST local time at Bayonne, United States [?]
Course: 204° – heading 511°
Speed: 7 km/h
Dimensions: length 17 m width 7 m draught 2.5 m
Last path: WDC3892>ais via KD2IBE
Positions stored: 29372
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