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 ATHENA - show graphs
Callsign: WDM7733
MMSI number: 368236750
IMO number: 625839
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: TACOMA (ETA Nov14 15:07)
Location: 47°16.62' N 122°27.26' W - locator CN87SG56LL - show map
2.8 km North bearing 344° from Tacoma, Pierce County, Washington, United States [?]
8.5 km Northwest bearing 300° from Fife, Pierce County, Washington, United States
37.7 km South bearing 194° from Seattle, King County, Washington, United States
Last position: 2025-11-14 15:03:09 UTC (4h23m ago)
2025-11-14 07:03:09 PST local time at Tacoma, United States [?]
Course: 132.9° – heading 134°
Speed: 15 km/h
Dimensions: length 26 m width 10 m draught 5.0 m
Last path: WDM7733>ais via KB7RYY
Positions stored: 133251
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