Callsign:	WDM5941
MMSI number:	368220730
Vessel class:	Sailing (36)
Location:	37°50.87' N 122°24.77' W - locator CM87TU03KL - show map 6.5 km East bearing 101° from Sausalito, Marin County, California, United States [?] 8.1 km North bearing 4° from San Francisco, San Francisco County, California, United States 72.6 km Northwest bearing 321° from San Jose, Santa Clara County, California, United States
Last position:	2025-09-14 21:11:10 UTC (1d 11h36m ago) 2025-09-14 14:11:10 PDT local time at Sausalito, United States [?]
Course:	72° – heading 82°
Speed:	12 km/h
Last path:	WDM5941>ais via SUNSET
Positions stored:	362

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.