Callsign:	WDF2131
MMSI number:	367425230
IMO number:	778088
Navigational status:	Under way (engine) (0)
Vessel class:	(6)
Destination:	US SFO 40
Location:	37°46.89' N 122°23.19' W - locator CM87TS37OM - show map 3.0 km East bearing 76° from San Francisco, San Francisco County, California, United States [?] 10.7 km Northeast bearing 38° from Daly City, San Mateo County, California, United States 65.5 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-16 19:23:24 UTC (2d 17h20m ago) 2025-11-16 11:23:24 PST local time at San Francisco, United States [?]
Course:	19° – heading 511°
Speed:	0 km/h
Dimensions:	length 27 m width 8 m draught 1.9 m
Last path:	WDF2131>ais via AA6CE
Positions stored:	2401

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.