Callsign:	WDJ4040
MMSI number:	367122610
IMO number:	951487
Navigational status:	Undefined/default (15)
Vessel class:	Tug (52)
Destination:	CHANNAHON
Location:	41°40.97' N 87°59.36' W - locator EN61AQ13GV - show map 1.4 km Northeast bearing 45° from Lemont, Cook County, Illinois, United States [?] 6.8 km East bearing 105° from Bolingbrook, Will County, Illinois, United States 28.8 km East bearing 107° from Aurora, Kane County, Illinois, United States 33.7 km Southwest bearing 237° from Chicago, Cook County, Illinois, United States
Last position:	2025-08-06 17:02:15 UTC (4d 14h51m ago) 2025-08-06 12:02:15 CDT local time at Lemont, United States [?]
Course:	360° – heading 339°
Speed:	0 km/h
Dimensions:	length 16 m width 6 m draught 2.0 m
Last path:	WDJ4040>ais via Snhnry
Positions stored:	10873

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.