Callsign:	WDF3127
MMSI number:	367436230
IMO number:	550773
Navigational status:	Under way (engine) (0)
Vessel class:	Passenger (60)
Destination:	SF BAY FERRY
Location:	37°46.64' N 122°21.83' W - locator CM87TS66IN - show map 4.9 km East bearing 87° from San Francisco, San Francisco County, California, United States [?] 8.7 km West bearing 250° from Oakland, Alameda County, California, United States 63.8 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2026-02-24 18:57:11 UTC (16h21m ago) 2026-02-24 10:57:11 PST local time at San Francisco, United States [?]
Course:	135.400009° – heading 137°
Speed:	47 km/h
Dimensions:	length 35 m width 8 m draught 0.0 m
Last path:	WDF3127>ais via AA6CE
Positions stored:	53381

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.