Callsign:	WDF2159
MMSI number:	367425520
IMO number:	550761
Navigational status:	Under way (engine) (0)
Vessel class:	Passenger (60)
Destination:	SF BAY FERRY
Location:	37°47.10' N 122°22.21' W - locator CM87TS58OJ - show map 4.5 km East bearing 76° from San Francisco, San Francisco County, California, United States [?] 11.9 km Northeast bearing 42° from Daly City, San Mateo County, California, United States 64.8 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2025-12-02 05:05:17 UTC (1h9m ago) 2025-12-01 21:05:17 PST local time at San Francisco, United States [?]
Course:	121.099998° – heading 511°
Speed:	51 km/h
Dimensions:	length 35 m width 8 m draught 0.0 m
Last path:	WDF2159>ais via AA6CE
Positions stored:	34303

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.