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°48.50' N 122°20.35' W - locator CM87TT94HA - show map 5.4 km Southwest bearing 242° from Emeryville, Alameda County, California, United States [?] 8.0 km Northeast bearing 62° from San Francisco, San Francisco County, California, United States 9.1 km Southwest bearing 220° from Berkeley, Alameda County, California, United States 65.2 km Northwest bearing 323° from San Jose, Santa Clara County, California, United States
Last position:	2025-02-16 00:54:30 UTC (2d 22h51m ago) 2025-02-15 16:54:30 PST local time at Emeryville, United States [?]
Course:	360° – heading 144°
Speed:	0 km/h
Dimensions:	length 29 m width 10 m draught 4.0 m
Last path:	WDE7721>ais via SUNSET
Positions stored:	61981

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.