Callsign:	WDJ4135
MMSI number:	367152240
IMO number:	391567
Navigational status:	Under way (engine) (0)
Vessel class:	RR 18 (Mob-83) (59)
Destination:	(ETA ***00 24:60)
Location:	37°49.10' N 122°24.75' W - locator CM87TT06MJ - show map 4.9 km North bearing 7° from San Francisco, San Francisco County, California, United States [?] 7.3 km Southeast bearing 148° from Tiburon, Marin County, California, United States 7.6 km Southeast bearing 143° from Belvedere, Marin County, California, United States 70.1 km Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2025-02-13 15:16:46 UTC (24d 2h53m ago) 2025-02-13 07:16:46 PST local time at San Francisco, United States [?]
Course:	140° – heading 511°
Speed:	11 km/h
Dimensions:	length 19 m width 7 m draught 1.5 m
Last path:	WDJ4135>ais via SUNSET
Positions stored:	2264

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.