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 POLAR EXPRESS - show graphs
Map loading...
Callsign: WDF4346
MMSI number: 367450780
IMO number: 808152
Navigational status: Under way (engine) (0)
Vessel class: Pleasure (37)
Destination: (ETA 00)
Location: 47°37.84' N 122°20.35' W - locator CN87TP91HJ - show map - static map
1.7 miles North bearing 349° from Seattle, King County, Washington, United States [?]
8.6 miles South bearing 179° from Shoreline, King County, Washington, United States
73.0 miles Southeast bearing 139° from Victoria, British Columbia, Canada
Last position: 2017-10-06 17:57:23 EDT (48d 11h39m ago)
2017-10-06 14:57:23 PDT local time at Seattle, United States [?]
Course: 353° – heading 353°
Dimensions: length 30 m width 7 m draught 0.0 m
Last path: WDF4346>ais via KB7RYY
Positions stored: 7035
Stations near current position of POLAR EXPRESS - show more
callsign distance last heard - EST      callsign distance last heard - EST
GEMELLI29.9 yards 99°2017-11-24 04:26:40 GRATITUDE42.6 yards 272°2017-10-31 03:14:12
LONG RANGER56.3 yards 33°2017-11-09 13:09:45 GREY T ESCAPE66.3 yards 194°2017-11-24 04:20:40
TWISTED JOURNEY71.3 yards 81°2017-11-12 17:35:21 DOCK HOLIDAY179.9 yards 179°2017-10-30 15:27:19
GRAND ADVENTURE188.4 yards 169°2017-11-23 13:47:03 GLACIER BLUE210.9 yards 352°2017-11-21 05:57:15
CELEBRATIONS234.9 yards 177°2017-11-14 16:06:04 CHAMPAGNE LADY237.2 yards 174°2017-11-18 23:57:27
KOLOKEA250.2 yards 350°2017-11-22 12:36:15 GIVIN UP281.7 yards 7°2017-11-24 03:44:39
VIRGINIA V353.2 yards 150°2017-11-18 19:30:24 CONFIRMED ON BOARD369.6 yards 5°2017-11-24 04:29:40
SEGUE434.8 yards 135°2017-11-19 04:05:36 AJ4AD-10450.6 yards 331°2017-11-02 23:24:46
ARES454.0 yards 137°2017-11-24 04:26:40 ELVIRA0.3 miles 110°2017-11-24 03:01:38
MOORE FUN0.3 miles 87°2017-11-10 19:18:51 NEW ATLANTIC0.3 miles 142°2017-11-24 04:35:41
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