Callsign:	YDA3973
MMSI number:	525100907
Vessel class:	Tug (52)
Location:	1°17.97' N 103°43.73' E - locator OJ11UH71LV - show map 13.5 km West bearing 275° from Singapore, Singapore [?] 18.7 km South bearing 190° from Johor Bahru, Johor, Malaysia
Last position:	2025-01-27 02:58:57 UTC (15d 15h33m ago) 2025-01-27 10:58:57 +08 local time at Singapore, Singapore [?]
Course:	346° – heading 511°
Speed:	3 km/h
Last path:	YDA3973>ais via 9V1LW
Positions stored:	15

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.