Callsign:	WDM6874
MMSI number:	367396670
IMO number:	194153
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Location:	37°46.82' N 122°20.71' W - locator CM87TS87NG - show map 6.6 km East bearing 85° from San Francisco, San Francisco County, California, United States [?] 7.1 km West bearing 248° from Oakland, Alameda County, California, United States 63.0 km Northwest bearing 321° from San Jose, Santa Clara County, California, United States
Last position:	2025-09-20 06:02:05 UTC (115d 2h48m ago) 2025-09-19 23:02:05 PDT local time at San Francisco, United States [?]
Course:	357° – heading 511°
Speed:	20 km/h
Dimensions:	length 29 m width 10 m draught 0.0 m
Last path:	WDM6874>ais via SUNSET
Positions stored:	43170

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.