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 FOUR CAPTAINS - show graphs
Map loading...
Callsign: WDI4637
MMSI number: 367700540
Navigational status: Under way (engine) (0)
Vessel class: Pleasure (37)
Location: 47°32.25' N 122°14.68' W - locator CN87VM09PA - show map - static map
5.3 miles East bearing 75° from White Center, King County, Washington, United States [?]
6.2 miles Southeast bearing 139° from Seattle, King County, Washington, United States
80.8 miles Southeast bearing 140° from Victoria, British Columbia, Canada
Last position: 2017-05-24 12:27:28 EDT (2d 11h57m ago)
2017-05-24 09:27:28 PDT local time at White Center, United States [?]
Course: 299.0° – heading 147°
Dimensions: length 27 m width 4 m draught 0.0 m
Last path: WDI4637>ais via KB7RYY
Positions stored: 724
Stations near current position of FOUR CAPTAINS - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
SOMI1.0 miles 73°2017-05-27 00:07:37 PORTOFINO1.2 miles 215°2017-05-24 00:11:28
KISMET1.2 miles 218°2017-05-05 13:36:25 30 LOVE1.3 miles 218°2017-05-26 22:04:30
KI7NNH-51.5 miles 314°2017-05-19 20:33:06 EW71031.6 miles 284°2017-05-27 00:22:18
SIDEWAYS1.6 miles 337°2017-05-26 22:23:30 K7ZCZ1.9 miles 56°2017-05-04 21:57:56
SWEET SPOT1.9 miles 337°2017-05-26 21:22:30 BILLYWIG2.0 miles 168°2017-05-22 20:37:42
ALTINO2.0 miles 111°2017-05-02 17:48:40 Y\ P A BU92.1 miles 337°2017-05-23 21:52:28
WA7HOI-92.1 miles 122°2017-05-05 21:46:35 W7MIR-102.2 miles 50°2017-05-27 00:07:51
W7MIR-112.2 miles 50°2017-05-27 00:07:51 PHOENIX2.6 miles 64°2017-05-26 20:29:30
K7NWS-32.9 miles 245°2017-05-23 16:52:40 KRNT2.9 miles 153°2017-05-05 12:32:50
KF7ZBK-i3.1 miles 146°2017-05-23 09:39:16 M V STAMPEDE3.2 miles 245°2017-05-27 00:22:30
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