Callsign:	WDB9821
MMSI number:	366983440
IMO number:	973033
Navigational status:	Reserved (12)
Vessel class:	Tug (52)
Destination:	CALCITE (ETA Jul18 04:00)
Location:	42°55.86' N 82°27.14' W - locator EN82SW53RK - show map 3.5 km Northeast bearing 54° from Marysville, Saint Clair County, Michigan, United States [?] 12.5 km North bearing 13° from Saint Clair, Saint Clair County, Michigan, United States 82.4 km Northeast bearing 36° from Detroit, Wayne County, Michigan, United States 99.3 km West bearing 267° from London, Ontario, Canada
Last position:	2025-07-17 11:23:56 UTC (1d 2h30m ago) 2025-07-17 07:23:56 EDT local time at Marysville, United States [?]
Course:	23° – heading 22°
Speed:	17 km/h
Dimensions:	length 257 m width 23 m draught 8.3 m
Last path:	WDB9821>ais via AIS-CK
Positions stored:	159819

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.