Callsign:	338157577
MMSI number:	338157577
Vessel class:	Sailing (36)
Location:	37°48.98' N 122°28.61' W - locator CM87ST25SV - show map 6.4 km South bearing 190° from Belvedere, Marin County, California, United States [?] 6.6 km South bearing 196° from Tiburon, Marin County, California, United States 6.8 km Northwest bearing 312° from San Francisco, San Francisco County, California, United States 73.7 km Northwest bearing 316° from San Jose, Santa Clara County, California, United States
Last position:	2025-07-26 21:02:52 UTC (1d 5h22m ago) 2025-07-26 14:02:52 PDT local time at Belvedere, United States [?]
Course:	63° – heading 511°
Speed:	16 km/h
Last path:	338157577>ais via SUNSET
Positions stored:	19

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.