Callsign:	ZGSP4
MMSI number:	319290400
Navigational status:	Undefined/default (15)
Vessel class:	(0)
Location:	39°15.41' N 7°19.87' E - locator JM39PG91RP - show map 84.8 km West bearing 279° from Carloforte, Provincia di Carbonia-Iglesias, Sardinia, Italy [?] 90.4 km West bearing 274° from Portoscuso, Provincia di Carbonia-Iglesias, Sardinia, Italy 103.0 km West bearing 276° from Carbonia, Provincia di Carbonia-Iglesias, Sardinia, Italy 129.7 km Southwest bearing 237° from Oristano, Provincia di Oristano, Sardinia, Italy
Last position:	2025-08-05 16:21:24 UTC (2h11m ago) 2025-08-05 18:21:24 CEST local time at Carloforte, Italy [?]
Course:	281.8° – heading 511°
Speed:	20 km/h
Dimensions:	length 22 m width 5 m draught 0.0 m
Last path:	ZGSP4>ais via IS0XDA
Positions stored:	450

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.