Callsign:	WDF3127
MMSI number:	367436230
IMO number:	550773
Navigational status:	Under way (engine) (0)
Vessel class:	Passenger (60)
Destination:	ALAMEDA (ETA ***00 24:60)
Location:	37°47.13' N 122°22.26' W - locator CM87TS58LM - show map 4.4 km East bearing 75° from San Francisco, San Francisco County, California, United States [?] 11.9 km Northeast bearing 42° from Daly City, San Mateo County, California, United States 64.9 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-21 03:06:41 UTC (11d 2h21m ago) 2025-11-20 19:06:41 PST local time at San Francisco, United States [?]
Course:	128° – heading 127°
Speed:	48 km/h
Dimensions:	length 35 m width 8 m draught 0.0 m
Last path:	WDF3127>ais via AA6CE
Positions stored:	53115

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.