Callsign:	JD4139
MMSI number:	431008976
IMO number:	810006
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (80)
Destination:	>JP KIJ EW W1B
Location:	37°38.32' N 137°38.64' E - locator PM87TP73GG - show map 69.7 km North bearing 345° from Itoigawa, Niigata, Japan [?] 75.5 km Northwest bearing 316° from Jōetsu, Niigata, Japan 124.7 km West bearing 257° from Niigata-shi, Niigata, Japan 147.0 km Northeast bearing 38° from Kanazawa-shi, Ishikawa, Japan
Last position:	2025-03-12 18:17:29 UTC (1d 6h11m ago) 2025-03-13 03:17:29 JST local time at Itoigawa, Japan [?]
Course:	77° – heading 75°
Speed:	23 km/h
Dimensions:	length 69 m width 11 m draught 5.2 m
Last path:	JD4139>ais via JH0WSL
Positions stored:	13809

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.