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 CLIPPER SURPRISE - show graphs
Callsign: WTH4410
MMSI number: 366298000
IMO number: 856754
Navigational status: Under way (engine) (0)
Vessel class: Fishing (30)
Destination: SEATTLE WA (ETA Oct17 02:00)
Location: 47°38.78' N 122°20.41' W - locator CN87TP95EC - show map
4.5 km North bearing 352° from Seattle, King County, Washington, United States [?]
13.7 km East bearing 81° from Bainbridge Island, Kitsap County, Washington, United States
116.1 km Southeast bearing 138° from Victoria, British Columbia, Canada
Last position: 2025-03-12 08:38:55 UTC (2d 8h56m ago)
2025-03-12 01:38:55 PDT local time at Seattle, United States [?]
Course: 185° – heading 180°
Speed: 0 km/h
Dimensions: length 39 m width 10 m draught 4.0 m
Last path: WTH4410>ais via KB7RYY
Positions stored: 715
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