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 BROTHERS - show graphs
Callsign:
MMSI number: 338360428
Vessel class: Pleasure (37)
Location: 44°04.59' N 68°56.02' W - locator FN54MB78WI - show map
9.9 km East bearing 94° from Owls Head, Knox County, Maine, United States [?]
14.3 km East bearing 102° from Rockland, Knox County, Maine, United States
102.3 km East bearing 91° from Lewiston, Androscoggin County, Maine, United States
115.5 km Northeast bearing 66° from Portland, Cumberland County, Maine, United States
Last position: 2025-02-20 00:03:56 UTC (2h37m ago)
2025-02-19 19:03:56 EST local time at Owls Head, United States [?]
Course: 119.900002° – heading 511°
Speed: 30 km/h
Last path: >ais via KN0O
Positions stored: 2225
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