Callsign:	R4A
MMSI number:	000001001
IMO number:	1097
Navigational status:	Undefined/default (15)
Vessel class:	(14)
Location:	41°28.38' N 13°25.71' E - locator JN61RL13KM - show map 4.3 km Southeast bearing 155° from Castro dei Volsci, Provincia di Frosinone, Latium, Italy [?] 10.3 km South bearing 174° from Pofi, Provincia di Frosinone, Latium, Italy 91.3 km Southeast bearing 121° from Roma, Provincia di Roma, Latium, Italy 98.9 km Northwest bearing 316° from Napoli, Provincia di Napoli, Campania, Italy
Last position:	2026-02-17 15:20:45 UTC (4d 18h3m ago) 2026-02-17 16:20:45 CET local time at Castro dei Volsci, Italy [?]
Course:	308° – heading 308°
Speed:	61 km/h
Dimensions:	length 0 m width 0 m draught 0.0 m
Last path:	R4A>ais via IC8FGU
Positions stored:	31756

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.