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 WESTRAC - show graphs
Map loading...
Callsign: WTH4325
MMSI number: 366993010
IMO number: 745096
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: SEATTLE (ETA Jan01 12:00)
Location: 47°34.17' N 122°20.77' W - locator CN87TN86KQ - show map - static map
4.2 km South bearing 195° from Seattle, King County, Washington, United States [?]
5.8 km North bearing 6° from White Center, King County, Washington, United States
9.2 km North bearing 345° from Boulevard Park, King County, Washington, United States
122.4 km Southeast bearing 141° from Victoria, British Columbia, Canada
Last position: 2021-09-19 15:23:59 UTC (9h56m ago)
2021-09-19 08:23:59 PDT local time at Seattle, United States [?]
Course: 247.4° – heading 18°
Speed: 0 km/h
Dimensions: length 23 m width 6 m draught 5.0 m
Last path: WTH4325>ais via KB7RYY
Positions stored: 486133
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