Callsign:	WDN5529
MMSI number:	368290820
Vessel class:	Sailing (36)
Location:	37°46.52' N 122°22.61' W - locator CM87TS46SB - show map 3.7 km East bearing 89° from San Francisco, San Francisco County, California, United States [?] 9.9 km West bearing 251° from Oakland, Alameda County, California, United States 64.4 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position:	2026-01-31 20:48:54 UTC (24d 14h30m ago) 2026-01-31 12:48:54 PST local time at San Francisco, United States [?]
Course:	101° – heading 511°
Speed:	4 km/h
Last path:	WDN5529>ais via AA6CE
Positions stored:	82

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.