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 DEFIANCE - show graphs
Map loading...
Callsign: 250000508
MMSI number: 250000508
Navigational status: Under way (engine) (0)
Vessel class: (0)
Location: 54°36.79' N 5°54.79' W - locator IO74BO07KE - show map - static map
2.2 miles North bearing 21° from Belfast, City of Belfast, N Ireland, United Kingdom [?]
3.0 miles North bearing 338° from Castlereagh, Castlereagh District, N Ireland, United Kingdom
3.9 miles Southwest bearing 244° from Holywood, N Ireland, United Kingdom
61.6 miles Southeast bearing 115° from Londonderry County Borough, N Ireland, United Kingdom
Last position: 2020-11-30 11:00:34 EST (4d 19h12m ago)
2020-11-30 16:00:34 GMT local time at Belfast, United Kingdom [?]
Course: 218° – heading 129°
Speed: 0 MPH
Dimensions: length 14 m width 3 m draught 0.0 m
Last path: 250000508>ais via NR116
Positions stored: 872
Stations near current position of DEFIANCE - show more
callsign distance last heard - EST      callsign distance last heard - EST
EMERALD GRATIA1.4 yards 150°2020-12-05 06:11:08 PILOT BOAT 4129.0 yards 87°2020-12-05 06:12:08
PILOT MADIGAN140.2 yards 87°2020-12-05 06:09:08 KIKKI C186.0 yards 181°2020-12-05 06:11:08
ARKLOW CLAN188.7 yards 306°2020-12-05 06:11:08 SVITZER SUSSEX261.4 yards 178°2020-12-05 06:13:08
VICTORIA281.6 yards 318°2020-11-30 18:30:54 SVITZER SURREY300.4 yards 182°2020-12-05 06:12:08
235113084 UK322.1 yards 256°2020-12-04 23:18:38 MERCHANTMAN322.2 yards 257°2020-12-05 06:12:08
MASTERMAN322.5 yards 255°2020-12-05 06:12:08 UNITY N292400.2 yards 16°2020-12-05 06:10:08
GARMOYLE413.9 yards 79°2020-12-02 11:00:23 CORYSTES425.6 yards 255°2020-12-05 06:11:08
HAVILAH438.9 yards 194°2020-12-05 06:13:08 ARKLOW VANGUARD454.2 yards 356°2020-12-05 06:12:08
JOLANTA0.4 miles 56°2020-12-05 06:12:08 BEAUMOTION0.5 miles 17°2020-12-05 06:02:39
236598002 GI0.5 miles 26°2020-11-27 04:57:27 235108087 UK0.5 miles 188°2020-11-25 10:09:57
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