Callsign:	JD4399
MMSI number:	431011716
IMO number:	816098
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (80)
Destination:	>JP MIZ FM E (ETA Jul29 20:00)
Location:	37°42.81' N 138°07.98' E - locator PM97BR51WF - show map 48.8 km Southwest bearing 213° from Ryōtsu, Niigata, Japan [?] 53.2 km Northwest bearing 316° from Kashiwazaki, Niigata, Japan 81.0 km West bearing 255° from Niigata-shi, Niigata, Japan 118.1 km North bearing 358° from Nagano-shi, Nagano, Japan
Last position:	2025-08-12 15:01:02 UTC (3h22m ago) 2025-08-13 00:01:02 JST local time at Ryōtsu, Japan [?]
Course:	79.400002° – heading 78°
Speed:	29 km/h
Dimensions:	length 105 m width 16 m draught 4.8 m
Last path:	JD4399>ais via JH0WSL
Positions stored:	54578

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.