Callsign:	WDE7721
MMSI number:	367396790
IMO number:	194177
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	SF BAY SHIP ASSIST (ETA ***00 00:00)
Location:	37°48.03' N 122°21.67' W - locator CM87TT62PD - show map 5.9 km Northeast bearing 61° from San Francisco, San Francisco County, California, United States [?] 11.7 km Southeast bearing 134° from Tiburon, Marin County, California, United States 12.1 km Southeast bearing 131° from Belvedere, Marin County, California, United States 65.7 km Northwest bearing 321° from San Jose, Santa Clara County, California, United States
Last position:	2025-02-27 14:09:54 UTC (10d 4h ago) 2025-02-27 06:09:54 PST local time at San Francisco, United States [?]
Course:	68° – heading 64°
Speed:	17 km/h
Dimensions:	length 29 m width 10 m draught 4.0 m
Last path:	WDE7721>ais via SUNSET
Positions stored:	61983

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.