Callsign:	WDJ9951
MMSI number:	368031010
Vessel class:	Pleasure (37)
Location:	37°50.72' N 122°28.12' W - locator CM87SU32SV - show map 3.1 km South bearing 187° from Belvedere, Marin County, California, United States [?] 3.3 km South bearing 199° from Tiburon, Marin County, California, United States 8.9 km Northwest bearing 331° from San Francisco, San Francisco County, California, United States 75.6 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position:	2025-10-22 22:15:42 UTC (4h42m ago) 2025-10-22 15:15:42 PDT local time at Belvedere, United States [?]
Course:	343.20001220703° – heading 354°
Speed:	12 km/h
Last path:	WDJ9951>ais via SUNSET
Positions stored:	115

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.