Callsign:	JD4100
MMSI number:	431008653
IMO number:	805843
Navigational status:	Under way (engine) (0)
Vessel class:	Cargo (70)
Destination:	>JP OTK OONO (ETA May30 00:00)
Location:	34°24.26' N 133°52.67' E - locator PM64WJ57IB - show map 10.1 km North bearing 15° from Sakaide, Kagawa, Japan [?] 16.0 km Northeast bearing 33° from Marugame, Kagawa, Japan 29.1 km South bearing 190° from Okayama-shi, Okayama, Japan 88.1 km Southwest bearing 239° from Himeji, Hyōgo, Japan
Last position:	2025-06-29 07:17:12 UTC (3d 17h4m ago) 2025-06-29 16:17:12 JST local time at Sakaide, Japan [?]
Course:	230° – heading 230°
Speed:	19 km/h
Dimensions:	length 75 m width 12 m draught 3.0 m
Last path:	JD4100>ais via JG3HLX
Positions stored:	132454

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.