Callsign:	WDF9441
MMSI number:	367505190
IMO number:	574170
Navigational status:	Under way (engine) (0)
Vessel class:	Sailing (36)
Location:	41°53.08' N 87°34.25' W - locator EN61FV12LH - show map 7.6 km Northeast bearing 60° from Chicago, Cook County, Illinois, United States [?] 23.6 km North bearing 344° from Whiting, Lake County, Indiana, United States 63.6 km East bearing 77° from Aurora, Kane County, Illinois, United States
Last position:	2025-09-29 00:46:09 UTC (113d 7h14m ago) 2025-09-28 19:46:09 CDT local time at Chicago, United States [?]
Course:	279° – heading 511°
Speed:	5 km/h
Dimensions:	length 49 m width 9 m draught 0.0 m
Last path:	WDF9441>ais via Snhnry
Positions stored:	76259

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.