Callsign:	WDC3449
MMSI number:	367008020
IMO number:	35315
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Location:	37°50.81' N 122°22.66' W - locator CM87TU43QF - show map 7.5 km Southeast bearing 113° from Tiburon, Marin County, California, United States [?] 8.1 km East bearing 111° from Belvedere, Marin County, California, United States 8.8 km Northeast bearing 25° from San Francisco, San Francisco County, California, United States 70.6 km Northwest bearing 323° from San Jose, Santa Clara County, California, United States
Last position:	2026-01-20 13:05:26 UTC (10d 20h47m ago) 2026-01-20 05:05:26 PST local time at Tiburon, United States [?]
Course:	142° – heading 141°
Speed:	10 km/h
Dimensions:	length 31 m width 10 m draught 3.7 m
Last path:	WDC3449>ais via SUNSET
Positions stored:	76570

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.