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 POLAR ENDEAVOUR - show graphs
Callsign: WCAJ
MMSI number: 338371000
IMO number: 193551
Navigational status: At anchor (1)
Vessel class: Tanker (89)
Destination: US SFO
Location: 37°46.25' N 122°21.54' W - locator CM87TS64VX - show map
5.3 km East bearing 95° from San Francisco, San Francisco County, California, United States [?]
11.6 km Northeast bearing 51° from Daly City, San Mateo County, California, United States
63.0 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position: 2025-11-24 04:45:52 UTC (8h8m ago)
2025-11-23 20:45:52 PST local time at San Francisco, United States [?]
Course: 282.200012° – heading 192°
Speed: 0 km/h
Dimensions: length 273 m width 46 m draught 12.3 m
Last path: WCAJ>ais via AA6CE
Positions stored: 66373
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