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 SAN JOAQUIN RIVER - show graphs
Map loading...
Callsign: WDC3248
MMSI number: 367004670
IMO number: 842454
Navigational status: Under way (engine) (0)
Vessel class: Tug (52)
Destination: RCH4 (ETA Aug23 01:00)
Location: 37°49.00' N 122°24.31' W - locator CM87TT16JA - show map - static map
3.0 miles North bearing 15° from San Francisco, San Francisco County, California, United States [?]
4.8 miles Southeast bearing 144° from Tiburon, Marin County, California, United States
5.0 miles Southeast bearing 140° from Belvedere, Marin County, California, United States
43.2 miles Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position: 2020-01-16 13:00:26 EST (3d 17h47m ago)
2020-01-16 10:00:26 PST local time at San Francisco, United States [?]
Course: 318° – heading 321°
Speed: 9 MPH
Dimensions: length 20 m width 8 m draught 3.0 m
Last path: WDC3248>ais via TACO
Positions stored: 23157
Stations near current position of SAN JOAQUIN RIVER - show more
callsign distance last heard - EST      callsign distance last heard - EST
HORNBLOWER DISCOVERY0.4 miles 140°2019-12-28 16:21:51 GOLDEN BEAR0.4 miles 198°2020-01-19 20:23:29
OSKI0.4 miles 219°2020-01-19 21:41:42 DELTA LINDSEY0.5 miles 3°2020-01-19 05:33:39
HARBOR EMPEROR0.5 miles 149°2020-01-18 20:20:50 3681206200.5 miles 172°2020-01-19 19:38:04
PROCESS0.6 miles 46°2020-01-01 13:58:24 ROYAL_PRINCE0.6 miles 239°2020-01-19 22:51:43
SOLITARY0.6 miles 160°2020-01-14 10:02:25 HARBOR QUEEN0.6 miles 234°2020-01-19 20:11:57
ROYAL STAR0.7 miles 248°2020-01-19 20:21:12 SAUSALITOBMPRESS0.7 miles 246°2020-01-19 14:14:13
ENHYDRA0.7 miles 260°2020-01-09 15:04:52 BAY MONARCH0.7 miles 252°2020-01-19 23:39:39
JEREMIAH OBRIEN0.8 miles 241°2020-01-20 00:10:48 CMA CGM THALASSA1.0 miles 11°2020-01-03 23:22:26
STI BATTERY1.0 miles 271°2020-01-19 00:11:48 338336985 US1.0 miles 24°2020-01-11 13:39:06
ALCATRAZ CLIPPER1.1 miles 309°2020-01-19 18:37:03 366999702 US1.1 miles 286°2020-01-05 13:24:56
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