Callsign:	PR4174
MMSI number:	710018340
IMO number:	679177
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Destination:	(ETA Feb23 14:30)
Location:	23°57.69' S 46°18.10' W - locator GG66UA39TF - show map 3.2 km East bearing 91° from Santos, Santos, São Paulo, Brazil [?] 5.8 km Northwest bearing 307° from Guarujá, Guarujá, São Paulo, Brazil 57.2 km Southeast bearing 144° from São Paulo, São Paulo, Brazil 60.2 km Southeast bearing 157° from Guarulhos, São Paulo, Brazil
Last position:	2025-09-21 20:59:44 UTC (2h48m ago) 2025-09-21 17:59:44 -03 local time at Santos, Brazil [?]
Course:	148.0° – heading 511°
Speed:	15 km/h
Dimensions:	length 20 m width 10 m draught 5.8 m
Last path:	PR4174>ais via PU2MUS
Positions stored:	11067

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.