Callsign:	WDM5302
MMSI number:	368214570
Vessel class:	Sailing (36)
Location:	37°48.82' N 122°26.13' W - locator CM87ST75RH - show map 4.5 km North bearing 342° from San Francisco, San Francisco County, California, United States [?] 13.3 km West bearing 262° from Emeryville, Alameda County, California, United States 71.0 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position:	2025-07-18 22:50:46 UTC (2d 14h55m ago) 2025-07-18 15:50:46 PDT local time at San Francisco, United States [?]
Course:	22° – heading 354°
Speed:	12 km/h
Last path:	WDM5302>ais via SUNSET
Positions stored:	18

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.