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 ARCTIC TERN - show graphs
Callsign: WDK3490
MMSI number: 368045770
Navigational status: Under way (engine) (0)
Vessel class: Pleasure (37)
Location: 48°28.90' N 122°51.19' W - locator CN88NL75OO - show map
13.4 km Southeast bearing 116° from Friday Harbor, San Juan County, Washington, United States [?]
18.0 km West bearing 259° from Anacortes, Skagit County, Washington, United States
87.5 km South bearing 167° from Vancouver, British Columbia, Canada
104.7 km North bearing 338° from Seattle, King County, Washington, United States
Last position: 2025-03-15 05:46:19 UTC (1h28m ago)
2025-03-14 22:46:19 PDT local time at Friday Harbor, United States [?]
Course: 360° – heading 511°
Speed: 0 km/h
Dimensions: length 10 m width 3 m draught 0.0 m
Last path: WDK3490>ais via VE7KA
Positions stored: 308
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