Callsign:	WDM3133
MMSI number:	368194460
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	SF BAY
Location:	37°46.50' N 122°22.09' W - locator CM87TS56TA - show map 4.5 km East bearing 90° from San Francisco, San Francisco County, California, United States [?] 9.1 km West bearing 249° from Oakland, Alameda County, California, United States 63.9 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position:	2026-02-24 12:10:35 UTC (1d 2h12m ago) 2026-02-24 04:10:35 PST local time at San Francisco, United States [?]
Course:	157° – heading 155°
Speed:	21 km/h
Dimensions:	length 30 m width 11 m draught 4.9 m
Last path:	WDM3133>ais via AA6CE
Positions stored:	26952

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.