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 UNTIDALED [2] - show graphs
Callsign: 338078811
MMSI number: 338078811
Vessel class: Pleasure (37)
Location: 37°48.90' N 122°28.79' W - locator CM87ST25KO - show map
4.3 miles Northwest bearing 310° from San Francisco, San Francisco County, California, United States [?]
5.9 miles South bearing 164° from Strawberry, 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: 2024-12-01 18:05:13 EST (2d 4h10m ago)
2024-12-01 15:05:13 PST local time at San Francisco, United States [?]
Course: 76° – heading 82°
Speed: 3 MPH
Last path: 338078811>ais via SUNSET
Positions stored: 44
Stations near current position of UNTIDALED [2] - show more
callsign distance last heard - EST      callsign distance last heard - EST
HOTATE MARU44.7 yards 45°2024-11-19 17:50:14 CAST OFF51.8 yards 79°2024-11-30 19:08:52
36824988076.4 yards 285°2024-11-29 16:51:07 338201659202.4 yards 195°2024-11-10 15:04:00
369990464263.6 yards 25°2024-12-03 20:23:39 SD-2005 (UNCREWED)277.1 yards 161°2024-12-02 12:51:59
BELEVEDERE299.2 yards 310°2024-11-09 16:57:44 NOTEWORTHY 359.9 yards 201°2024-11-16 14:58:10
368220220365.6 yards 65°2024-11-15 17:01:52 338311146381.0 yards 327°2024-11-29 13:31:11
HURRICANE418.8 yards 71°2024-11-30 23:35:24 GENTLE STORM II 457.1 yards 13°2024-11-10 16:30:09
FLY BOYS481.3 yards 291°2024-11-16 16:26:14 CETACEA492.2 yards 44°2024-12-01 20:15:07
366999892501.3 yards 208°2024-12-03 20:14:30 LARK 0.3 miles 5°2024-11-10 18:18:26
SALTY LADY0.3 miles 48°2024-12-01 14:54:56 3385032910.3 miles 13°2024-12-01 14:19:14
DARRING II0.3 miles 320°2024-12-01 19:48:42 3676529600.4 miles 34°2024-11-09 19:27:26
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