Callsign:	MADDERN
MMSI number:	503056570
Navigational status:	Under way (engine) (0)
Vessel class:	Fishing (30)
Location:	34°52.43' S 150°53.80' E - locator QF55KD70OH - show map 15.4 km East bearing 76° from Greenwell Point, Shoalhaven Shire, New South Wales, Australia [?] 15.4 km Southeast bearing 156° from Gerringong, New South Wales, Australia 50.0 km South bearing 180° from Wollongong, Wollongong, New South Wales, Australia 115.4 km South bearing 194° from Sydney, City of Sydney, New South Wales, Australia
Last position:	2025-09-18 09:33:58 UTC (1d 14h25m ago) 2025-09-18 19:33:58 AEST local time at Greenwell Point, Australia [?]
Course:	184° – heading 183°
Speed:	16 km/h
Dimensions:	length 2 m width 2 m draught 0.0 m
Last path:	MADDERN>ais via vk2him
Positions stored:	23

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.