Callsign:	WDC8307
MMSI number:	367084930
IMO number:	433799
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	ALPENA
Location:	41°53.34' N 87°24.32' W - locator EN61HV13II - show map 20.7 km East bearing 78° from Chicago, Cook County, Illinois, United States [?] 24.4 km North bearing 18° from Whiting, Lake County, Indiana, United States 77.1 km East bearing 79° from Aurora, Kane County, Illinois, United States
Last position:	2025-08-24 06:56:50 UTC (2d 1h14m ago) 2025-08-24 01:56:50 CDT local time at Chicago, United States [?]
Course:	16° – heading 13°
Speed:	19 km/h
Dimensions:	length 45 m width 22 m draught 5.5 m
Last path:	WDC8307>ais via Snhnry
Positions stored:	137534

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.