Callsign:	R4A
MMSI number:	000001001
IMO number:	32
Navigational status:	Undefined/default (15)
Vessel class:	(14)
Destination:	(ETA ***00 24:60)
Location:	40°38.28' N 8°17.65' E - locator JN40DP53HD - show map 7.4 km West bearing 258° from Olmedo, Provincia di Sassari, Sardinia, Italy [?] 9.0 km North bearing 347° from Alghero, Provincia di Sassari, Sardinia, Italy 24.5 km Southwest bearing 246° from Sassari, Provincia di Sassari, Sardinia, Italy 105.1 km West bearing 253° from Olbia, Provincia di Olbia-Tempio, Sardinia, Italy
Last position:	2025-05-12 16:19:54 UTC (2d 8h2m ago) 2025-05-12 18:19:54 CEST local time at Olmedo, Italy [?]
Course:	197° – heading 196°
Speed:	33 km/h
Dimensions:	length 0 m width 0 m draught 0.0 m
Last path:	R4A>ais via IS0XDA
Positions stored:	25387

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.