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 PATIENCE - show graphs
Callsign: WDK4722
MMSI number: 368058070
IMO number: 351397
Navigational status: Under way (engine) (0)
Vessel class: Pleasure (37)
Location: 47°36.08' N 122°17.03' W - locator CN87UO54WH - show map
3.7 km East bearing 98° from Seattle, King County, Washington, United States [?]
10.7 km Northeast bearing 30° from White Center, King County, Washington, United States
122.7 km Southeast bearing 138° from Victoria, British Columbia, Canada
Last position: 2025-02-18 18:48:10 UTC (41s ago)
2025-02-18 10:48:10 PST local time at Seattle, United States [?]
Course: 010.1° – heading 511°
Speed: 0 km/h
Dimensions: length 13 m width 5 m draught 0.0 m
Last path: WDK4722>ais via KB7RYY
Positions stored: 1531
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