Callsign:	WDJ4040
MMSI number:	367122610
IMO number:	951487
Navigational status:	Undefined/default (15)
Vessel class:	Tug (52)
Destination:	CHANNAHON
Location:	41°40.94' N 87°59.46' W - locator EN61AQ13BR - show map 1.3 km Northeast bearing 43° from Lemont, Cook County, Illinois, United States [?] 6.7 km East bearing 106° from Bolingbrook, Will County, Illinois, United States 28.6 km East bearing 108° from Aurora, Kane County, Illinois, United States 33.9 km Southwest bearing 237° from Chicago, Cook County, Illinois, United States
Last position:	2025-10-03 02:34:29 UTC (9h28m ago) 2025-10-02 21:34:29 CDT local time at Lemont, United States [?]
Course:	60.200001° – heading 252°
Speed:	7 km/h
Dimensions:	length 16 m width 6 m draught 2.0 m
Last path:	WDJ4040>ais via Snhnry
Positions stored:	11133

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.