Callsign:	LEON@@@
MMSI number:	338087785
Vessel class:	Pleasure (37)
Location:	37°49.81' N 122°27.24' W - locator CM87ST59MF - show map 4.8 km South bearing 177° from Tiburon, Marin County, California, United States [?] 6.8 km Northwest bearing 334° from San Francisco, San Francisco County, California, United States 73.5 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position:	2025-07-31 18:30:12 UTC (4d 1h32m ago) 2025-07-31 11:30:12 PDT local time at Tiburon, United States [?]
Course:	329° – heading 511°
Speed:	48 km/h
Last path:	LEON@@@>ais via SUNSET
Positions stored:	27

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.