Callsign:	YSJ41Q
MMSI number:	503098630
Navigational status:	Under way (engine) (0)
Vessel class:	Sailing (36)
Location:	20°49.16' S 149°26.80' E - locator QG49RE33OI - show map 47.2 km Northeast bearing 38° from Mackay, Mackay, Queensland, Australia [?] 55.4 km Northeast bearing 47° from Walkerston, Mackay, Queensland, Australia 113.2 km Southeast bearing 120° from Red Hill, Whitsunday, Queensland, Australia
Last position:	2025-07-11 20:12:24 UTC (46d 23h52m ago) 2025-07-12 06:12:24 AEST local time at Mackay, Australia [?]
Course:	275° – heading 511°
Speed:	12 km/h
Dimensions:	length 15 m width 4 m draught 0.0 m
Last path:	YSJ41Q>ais via VK4NB
Positions stored:	37380

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.