Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
AIS vessel HEYBOY - show graphs
Callsign: WDH5644
MMSI number: 367629970
Navigational status: Undefined/default (15)
Vessel class: Pleasure (37)
Location: 42°01.51' N 87°37.62' W - locator EN62EA46SA - show map
5.5 km East bearing 109° from Evanston, Cook County, Illinois, United States [?]
8.8 km East bearing 75° from Lincolnwood, Cook County, Illinois, United States
19.6 km North bearing 6° from Chicago, Cook County, Illinois, United States
115.0 km South bearing 168° from Milwaukee, Milwaukee County, Wisconsin, United States
Last position: 2025-07-03 18:46:07 UTC (23d 18h15m ago)
2025-07-03 13:46:07 CDT local time at Evanston, United States [?]
Course: 343° – heading 511°
Speed: 14 km/h
Dimensions: length 10 m width 4 m draught 0.0 m
Last path: WDH5644>ais via Snhnry
Positions stored: 654
About this site
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS