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Callsign, ship name or locator: Clear       
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AIS vessel CALIFORNIAHORNBLOWER - show graphs
Callsign: WDB8632
MMSI number: 366961920
Navigational status: Under way (engine) (0)
Vessel class: Passenger (60)
Destination: SFO03&SFO3
Location: 37°47.11' N 122°22.79' W - locator CM87TS48JK - show map
3.7 km East bearing 72° from San Francisco, San Francisco County, California, United States [?]
9.8 km West bearing 257° from Oakland, Alameda County, California, United States
65.4 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position: 2026-02-24 04:25:45 UTC (1d 11h28m ago)
2026-02-23 20:25:45 PST local time at San Francisco, United States [?]
Course: 327° – heading 511°
Speed: 7 km/h
Dimensions: length 54 m width 10 m draught 3.0 m
Last path: WDB8632>ais via AA6CE
Positions stored: 38660
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.
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