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 RASCAL - show graphs
Callsign: WDP3581
MMSI number: 368346760
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: CATHLAMET (ETA Aug26 00:00)
Location: 37°50.55' N 122°27.83' W - locator CM87SU42IE - show map
3.4 km South bearing 179° from Belvedere, Marin County, California, United States [?]
3.5 km South bearing 190° from Tiburon, Marin County, California, United States
8.5 km Northwest bearing 333° from San Francisco, San Francisco County, California, United States
75.1 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position: 2025-06-25 10:46:53 UTC (30d 19h30m ago)
2025-06-25 03:46:53 PDT local time at Belvedere, United States [?]
Course: 13° – heading 20°
Speed: 14 km/h
Dimensions: length 20 m width 10 m draught 0.0 m
Last path: WDP3581>ais via SUNSET
Positions stored: 52
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