Callsign:	VREF4
MMSI number:	477399500
IMO number:	700266
Navigational status:	Under way (engine) (0)
Vessel class:	(90)
Destination:	WALVISBAY (ETA Feb02 12:00)
Location:	23°59.82' S 46°19.91' W - locator GG66UA00ER - show map 4.0 km South bearing 177° from Santos, Santos, São Paulo, Brazil [?] 7.7 km West bearing 267° from Guarujá, Guarujá, São Paulo, Brazil 58.8 km Southeast bearing 148° from São Paulo, São Paulo, Brazil 62.8 km South bearing 161° from Guarulhos, São Paulo, Brazil
Last position:	2026-01-18 13:37:57 UTC (12d 7h51m ago) 2026-01-18 10:37:57 -03 local time at Santos, Brazil [?]
Course:	215° – heading 206°
Speed:	15 km/h
Dimensions:	length 232 m width 42 m draught 8.8 m
Last path:	VREF4>ais via PU2MUS
Positions stored:	1953

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.