Callsign:	WDN4713
MMSI number:	368283540
IMO number:	316834
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	CHICAGO
Location:	41°44.03' N 87°31.58' W - locator EN61FR66UD - show map 6.6 km Northwest bearing 336° from Whiting, Lake County, Indiana, United States [?] 10.9 km North bearing 13° from Burnham, Cook County, Illinois, United States 16.5 km Southeast bearing 142° from Chicago, Cook County, Illinois, United States 65.9 km East bearing 92° from Aurora, Kane County, Illinois, United States
Last position:	2025-07-13 11:10:14 UTC (14d 15h33m ago) 2025-07-13 06:10:14 CDT local time at Whiting, United States [?]
Course:	264° – heading 252°
Speed:	15 km/h
Dimensions:	length 20 m width 7 m draught 3.1 m
Last path:	WDN4713>ais via Snhnry
Positions stored:	5315

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.