Callsign:	R4A
MMSI number:	000001001
IMO number:	194
Navigational status:	Undefined/default (15)
Vessel class:	(0)
Location:	40°53.77' N 12°56.78' E - locator JN60LV35NB - show map 1.4 km West bearing 281° from Ponza, Provincia di Latina, Latium, Italy [?] 39.9 km South bearing 198° from San Felice Circeo, Provincia di Latina, Latium, Italy 109.8 km West bearing 274° from Napoli, Provincia di Napoli, Campania, Italy 117.5 km South bearing 161° from Roma, Provincia di Roma, Latium, Italy
Last position:	2025-12-05 12:35:28 UTC (31m27s ago) 2025-12-05 13:35:28 CET local time at Ponza, Italy [?]
Course:	278.9° – heading 278°
Speed:	111 km/h
Dimensions:	length 0 m width 0 m draught 0.0 m
Last path:	R4A>ais via IZ0ORT
Positions stored:	31333

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.