Callsign:	R4A
MMSI number:	000001001
IMO number:	147
Navigational status:	Undefined/default (15)
Vessel class:	(14)
Destination:	(ETA ***00 24:60)
Location:	40°36.70' N 8°16.70' E - locator JN40DO36JT - show map 6.8 km Northwest bearing 330° from Alghero, Provincia di Sassari, Sardinia, Italy [?] 9.7 km Southwest bearing 243° from Olmedo, Provincia di Sassari, Sardinia, Italy 27.0 km Southwest bearing 242° from Sassari, Provincia di Sassari, Sardinia, Italy 107.3 km West bearing 252° from Olbia, Provincia di Olbia-Tempio, Sardinia, Italy
Last position:	2025-09-13 17:22:08 UTC (2h59m ago) 2025-09-13 19:22:08 CEST local time at Alghero, Italy [?]
Course:	025.6° – heading 25°
Speed:	163 km/h
Dimensions:	length 0 m width 0 m draught 0.0 m
Last path:	R4A>ais via IS0XDA
Positions stored:	29252

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.