Callsign:	WDN4581
MMSI number:	338896000
IMO number:	670365
Navigational status:	Under way (engine) (0)
Vessel class:	(10)
Destination:	NAVAGANTES BR (ETA Jul03 15:00)
Location:	23°08.44' S 43°08.45' W - locator GG86KU36CF - show map 27.3 km South bearing 166° from Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil [?] 28.8 km South bearing 188° from Niterói, Rio de Janeiro, Brazil 53.0 km Southeast bearing 143° from Nova Iguaçu, Nova Iguaçu, Rio de Janeiro, Brazil
Last position:	2025-10-01 05:21:28 UTC (1d 20h45m ago) 2025-10-01 02:21:28 -03 local time at Rio de Janeiro, Brazil [?]
Course:	210° – heading 211°
Speed:	18 km/h
Dimensions:	length 91 m width 18 m draught 5.0 m
Last path:	WDN4581>ais via PY1AU
Positions stored:	2670

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.