Callsign:	JD4090
MMSI number:	431008517
IMO number:	805831
Navigational status:	Under way (engine) (0)
Vessel class:	Cargo (70)
Destination:	>JP NAO OFF
Location:	37°11.36' N 138°14.94' E - locator PM97CE95VL - show map 4.7 km North bearing 14° from Jōetsu, Niigata, Japan [?] 19.2 km North bearing 360° from Arai, Niigata, Japan 60.1 km North bearing 6° from Nagano-shi, Nagano, Japan 104.5 km Southwest bearing 221° from Niigata-shi, Niigata, Japan
Last position:	2025-09-16 21:16:31 UTC (1d 3h4m ago) 2025-09-17 06:16:31 JST local time at Jōetsu, Japan [?]
Course:	197° – heading 195°
Speed:	9 km/h
Dimensions:	length 75 m width 12 m draught 4.8 m
Last path:	JD4090>ais via JH0WSL
Positions stored:	100547

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.