Callsign:	338466051
MMSI number:	338466051
Vessel class:	Sailing (36)
Location:	37°48.99' N 122°28.84' W - locator CM87ST25HW - show map 7.1 km Northwest bearing 311° from San Francisco, San Francisco County, California, United States [?] 8.4 km Southeast bearing 145° from Tamalpais-Homestead Valley, Marin County, California, United States 11.4 km Southeast bearing 150° from Mill Valley, Marin County, California, United States 74.0 km Northwest bearing 316° from San Jose, Santa Clara County, California, United States
Last position:	2025-10-17 21:44:06 UTC (5d 3h23m ago) 2025-10-17 14:44:06 PDT local time at San Francisco, United States [?]
Course:	66° – heading 77°
Speed:	6 km/h
Last path:	338466051>ais via SUNSET
Positions stored:	96

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.