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 S/V FREE SWAN 46 - show graphs
Map loading...
Callsign: WDJ8007
MMSI number: 368012230
Vessel class: Pleasure (37)
Location: 37°48.90' N 122°28.80' W - locator CM87ST25JO - show map - static map
4.3 miles Northwest bearing 310° from San Francisco, San Francisco County, California, United States [?]
5.3 miles Southeast bearing 145° from Tamalpais-Homestead Valley, Marin County, California, United States
7.2 miles Southeast bearing 151° from Mill Valley, Marin County, California, United States
45.9 miles Northwest bearing 316° from San Jose, Santa Clara County, California, United States
Last position: 2018-05-18 17:59:18 EDT (7d 6h26m ago)
2018-05-18 14:59:18 PDT local time at San Francisco, United States [?]
Course: 53° – heading 56°
Speed: 13 MPH
Last path: WDJ8007>ais via SUNSET
Positions stored: 470
Stations near current position of S/V FREE SWAN 46 - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
CATAPULT43.0 yards 63°2018-05-25 18:18:09 33821085764.6 yards 196°2018-05-05 19:07:50
338194954105.5 yards 341°2018-04-27 21:12:06 GOLDEN BEAR127.8 yards 224°2018-05-23 20:55:41
AVION172.1 yards 201°2018-05-12 19:18:07 OLD BLUE182.3 yards 2°2018-05-25 20:55:27
ROYAL_PRINCE280.0 yards 332°2018-05-25 21:39:33 ESCAPE292.9 yards 55°2018-05-13 18:23:26
SAN FRANCISCO BELLE312.7 yards 47°2018-05-13 16:04:24 OSKI525.1 yards 19°2018-05-25 21:56:30
HARBOR EMPEROR0.3 miles 7°2018-04-29 19:55:58 ENCORE0.4 miles 11°2018-05-25 12:15:22
CHIM CHIM0.4 miles 39°2018-05-24 05:46:02 DELTA BILLIE0.5 miles 274°2018-05-25 18:51:30
P V CALIFORNIA0.5 miles 38°2018-05-20 11:11:41 3677623800.5 miles 16°2018-04-28 19:14:02
3671668100.6 miles 5°2018-05-24 14:35:52 BLUE MOON0.6 miles 12°2018-04-28 20:38:41
KEEGAN FOSS0.6 miles 35°2018-05-13 21:58:43 DELTA CATHRYN0.6 miles 29°2018-05-25 20:07:28
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.
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