Callsign:	WDJ3805
MMSI number:	367771580
IMO number:	515383
Navigational status:	Undefined/default (15)
Vessel class:	Pleasure (37)
Location:	37°51.99' N 122°29.81' W - locator CM87SU07JX - show map 3.7 km East bearing 111° from Tamalpais-Homestead Valley, Marin County, California, United States [?] 6.1 km Southeast bearing 136° from Mill Valley, Marin County, California, United States 12.2 km Northwest bearing 326° from San Francisco, San Francisco County, California, United States 79.0 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position:	2025-07-27 12:07:36 UTC (2d 22h32m ago) 2025-07-27 05:07:36 PDT local time at Tamalpais-Homestead Valley, United States [?]
Course:	360° – heading 511°
Speed:	0 km/h
Dimensions:	length 28 m width 7 m draught 0.0 m
Last path:	WDJ3805>ais via SUNSET
Positions stored:	1693

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.