Callsign:	WDF2131
MMSI number:	367425230
IMO number:	778088
Navigational status:	Under way (engine) (0)
Vessel class:	(6)
Destination:	US SFO 40 (ETA ***00 24:60)
Location:	37°48.63' N 122°26.43' W - locator CM87ST74DM - show map 4.4 km Northwest bearing 335° from San Francisco, San Francisco County, California, United States [?] 7.2 km South bearing 169° from Tiburon, Marin County, California, United States 7.2 km South bearing 163° from Belvedere, Marin County, California, United States 71.1 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position:	2025-02-15 21:15:17 UTC (18d 6h43m ago) 2025-02-15 13:15:17 PST local time at San Francisco, United States [?]
Course:	81° – heading 511°
Speed:	14 km/h
Dimensions:	length 27 m width 8 m draught 1.9 m
Last path:	WDF2131>ais via SUNSET
Positions stored:	2400

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.