Callsign:	WDE3771
MMSI number:	367343990
IMO number:	366398
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	CALUMET HARBOR
Location:	41°40.34' N 87°26.20' W - locator EN61GQ71OI - show map 10.0 km Northeast bearing 51° from Calumet City, Cook County, Illinois, United States [?] 10.6 km East bearing 70° from Burnham, Cook County, Illinois, United States 26.5 km Southeast bearing 138° from Chicago, Cook County, Illinois, United States 73.9 km East bearing 97° from Aurora, Kane County, Illinois, United States
Last position:	2025-11-04 15:08:08 UTC (65d 21h2m ago) 2025-11-04 09:08:08 CST local time at Calumet City, United States [?]
Course:	160° – heading 511°
Speed:	0 km/h
Dimensions:	length 20 m width 5 m draught 3.0 m
Last path:	WDE3771>ais via Snhnry
Positions stored:	79007

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.