Callsign:	JD4939
MMSI number:	431017504
IMO number:	918353
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (80)
Destination:	>JP UBJ OFF (ETA Sep27 07:00)
Location:	34°24.92' N 134°18.31' E - locator PM74DJ69OP - show map 13.5 km Southeast bearing 124° from Tonoshō, Kagawa, Japan [?] 15.8 km Northeast bearing 50° from Shido, Kagawa, Japan 86.0 km West bearing 249° from Kōbe-shi, Hyōgo, Japan 113.8 km West bearing 255° from Ōsaka-shi, Ōsaka, Japan
Last position:	2025-09-26 07:18:46 UTC (7d 14h59m ago) 2025-09-26 16:18:46 JST local time at Tonoshō, Japan [?]
Course:	261° – heading 262°
Speed:	21 km/h
Dimensions:	length 68 m width 12 m draught 5.0 m
Last path:	JD4939>ais via JG3HLX
Positions stored:	29897

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.