Callsign:	WDF7733
MMSI number:	367487570
IMO number:	619270
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	CHICAGO 74
Location:	43°03.03' N 87°49.62' W - locator EN63CB02SC - show map 6.6 km East bearing 79° from Milwaukee, Milwaukee County, Wisconsin, United States [?] 10.1 km Northeast bearing 24° from Saint Francis, Milwaukee County, Wisconsin, United States 10.5 km North bearing 16° from Cudahy, Milwaukee County, Wisconsin, United States 135.0 km Northeast bearing 50° from Rockford, Winnebago County, Illinois, United States
Last position:	2025-09-18 21:36:31 UTC (1d 1h11m ago) 2025-09-18 16:36:31 CDT local time at Milwaukee, United States [?]
Course:	33° – heading 33°
Speed:	17 km/h
Dimensions:	length 164 m width 16 m draught 6.4 m
Last path:	WDF7733>ais via Snhnry
Positions stored:	54571

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.