Callsign:	WDK4179
MMSI number:	368052630
Navigational status:	Undefined/default (15)
Vessel class:	Passenger (60)
Location:	37°46.68' N 122°23.08' W - locator CM87TS36UQ - show map 3.1 km East bearing 84° from San Francisco, San Francisco County, California, United States [?] 10.5 km Northeast bearing 40° from Daly City, San Mateo County, California, United States 65.1 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position:	2025-12-01 03:00:26 UTC (23h13m ago) 2025-11-30 19:00:26 PST local time at San Francisco, United States [?]
Course:	65° – heading 62°
Speed:	12 km/h
Dimensions:	length 42 m width 10 m draught 0.0 m
Last path:	WDK4179>ais via AA6CE
Positions stored:	52595

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.