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: 338360428
MMSI number: 338360428
Vessel class: Pleasure (37)
Location: 44°05.93' N 69°01.04' W - locator FN54LC73WR - show map
3.7 km Northeast bearing 60° from Owls Head, Knox County, Maine, United States [?]
7.3 km East bearing 94° from Rockland, Knox County, Maine, United States
95.6 km East bearing 90° from Lewiston, Androscoggin County, Maine, United States
110.4 km Northeast bearing 63° from Portland, Cumberland County, Maine, United States
Last position: 2025-03-14 14:09:52 UTC (1h46m ago)
2025-03-14 10:09:52 EDT local time at Owls Head, United States [?]
Course: 276.700012° – heading 511°
Speed: 32 km/h
Last path: 338360428>ais via KN0O
Positions stored: 2268
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