Callsign:	WDM7074
MMSI number:	368230670
Vessel class:	Sailing (36)
Location:	37°48.09' N 122°31.19' W - locator CM87RT72PI - show map 8.7 km South bearing 170° from Tamalpais-Homestead Valley, Marin County, California, United States [?] 9.3 km West bearing 289° from San Francisco, San Francisco County, California, United States 11.8 km South bearing 169° from Mill Valley, Marin County, California, United States 75.3 km Northwest bearing 313° from San Jose, Santa Clara County, California, United States
Last position:	2025-10-20 19:36:43 UTC (2d 14h12m ago) 2025-10-20 12:36:43 PDT local time at Tamalpais-Homestead Valley, United States [?]
Course:	360° – heading 511°
Speed:	189 km/h
Last path:	WDM7074>ais via SUNSET
Positions stored:	3

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.