Callsign:	WDA2184
MMSI number:	366971980
IMO number:	228942
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	PORTLAND
Location:	37°44.95' N 122°20.01' W - locator CM87TR99XT - show map 8.1 km East bearing 111° from San Francisco, San Francisco County, California, United States [?] 9.6 km Northeast bearing 38° from Brisbane, San Mateo County, California, United States 59.7 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-04 20:44:32 UTC (4d 15h22m ago) 2025-11-04 12:44:32 PST local time at San Francisco, United States [?]
Course:	338° – heading 336°
Speed:	4 km/h
Dimensions:	length 30 m width 10 m draught 5.3 m
Last path:	WDA2184>ais via SUNSET
Positions stored:	2916

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.