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 338691000 - show graphs
Callsign: 338691000
MMSI number: 338691000
Navigational status: Under way (sailing) (8)
Location: 37°51.93' N 122°29.57' W - locator CM87SU07UR - show map
4.1 km East bearing 110° from Tamalpais-Homestead Valley, Marin County, California, United States [?]
6.4 km Southeast bearing 135° from Mill Valley, Marin County, California, United States
12.0 km Northwest bearing 327° from San Francisco, San Francisco County, California, United States
78.7 km Northwest bearing 318° from San Jose, Santa Clara County, California, United States
Last position: 2025-02-08 16:43:11 UTC (4d 59m ago)
2025-02-08 08:43:11 PST local time at Tamalpais-Homestead Valley, United States [?]
Course: 130° – heading 511°
Speed: 0 km/h
Last path: 338691000>ais via SUNSET
Positions stored: 11247
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