Callsign:	WDM6878
MMSI number:	367581220
IMO number:	694323
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	SHIP ASSIST TUG
Location:	37°47.27' N 122°21.88' W - locator CM87TS69FB - show map 5.0 km East bearing 73° from San Francisco, San Francisco County, California, United States [?] 8.4 km West bearing 257° from Oakland, Alameda County, California, United States 64.8 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2026-02-11 20:59:49 UTC (13d 18h25m ago) 2026-02-11 12:59:49 PST local time at San Francisco, United States [?]
Course:	195° – heading 147°
Speed:	0 km/h
Dimensions:	length 33 m width 13 m draught 5.7 m
Last path:	WDM6878>ais via AA6CE
Positions stored:	4395

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.