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 POLARIS VOYAGER - show graphs
Callsign: C6AP4
MMSI number: 311000112
IMO number: 665748
Navigational status: Under way (engine) (0)
Vessel class: Tanker, carrying hazard/pollutant cat A (81)
Destination: US SFO (ETA Jul22 05:00)
Location: 37°55.56' N 122°24.86' W - locator CM87TW02GF - show map
3.4 miles Southwest bearing 228° from North Richmond, Contra Costa County, California, United States [?]
4.3 miles Northeast bearing 32° from Tiburon, Marin County, California, United States
10.4 miles North bearing 2° from San Francisco, San Francisco County, California, United States
49.5 miles Northwest bearing 325° from San Jose, Santa Clara County, California, United States
Last position: 2025-02-01 08:07:11 EST (13h40m ago)
2025-02-01 05:07:11 PST local time at North Richmond, United States [?]
Course: 261.79998779297° – heading 324°
Speed: 0 MPH
Dimensions: length 276 m width 48 m draught 13.0 m
Last path: C6AP4>ais via SUNSET
Positions stored: 67007
Stations near current position of POLARIS VOYAGER - show more
callsign distance last heard - EST      callsign distance last heard - EST
VALOR121.3 yards 199°2025-02-01 15:03:37 HAFNIA LYNX0.3 miles 143°2025-02-01 18:33:17
TEXAS VOYAGER0.4 miles 143°2025-01-30 16:26:29 3673732800.5 miles 263°2025-01-09 07:11:51
BETTY L0.5 miles 268°2025-01-28 14:31:47 DELTA CATHRYN0.5 miles 239°2025-01-25 22:23:06
3673030000.7 miles 301°2025-01-04 22:32:43 SUN DRAGON0.8 miles 215°2025-01-25 19:23:15
LYRA0.9 miles 309°2025-02-01 20:19:39 3673109901.5 miles 195°2025-01-16 11:59:52
DW72132.0 miles 156°2025-02-01 21:47:12 SEAWAYS MOMENT2.0 miles 248°2025-01-29 01:49:34
JAMAICA BAY2.0 miles 326°2025-01-23 07:55:44 3680156902.0 miles 135°2025-01-25 18:12:25
3667510602.1 miles 205°2025-01-06 13:33:18 SAN FRANCISCO2.2 miles 259°2025-02-01 21:25:37
GOLDEN GATE2.3 miles 214°2025-01-31 22:11:00 3681712702.4 miles 128°2025-02-01 11:53:54
DEL NORTE2.5 miles 199°2025-02-01 20:28:15 Vts. PT. SAN PABLO2.5 miles 349°2025-02-01 09:29:20
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