Callsign:	JD4090
MMSI number:	431008517
IMO number:	805831
Navigational status:	Under way (engine) (0)
Vessel class:	Cargo (70)
Destination:	>JP KSM
Location:	37°56.20' N 138°37.00' E - locator PM97HW34XT - show map 22.9 km Southeast bearing 135° from Ryōtsu, Niigata, Japan [?] 31.3 km Northwest bearing 312° from Maki, Niigata, Japan 35.9 km West bearing 276° from Niigata-shi, Niigata, Japan 93.8 km North bearing 21° from Jōetsu, Niigata, Japan
Last position:	2025-07-28 11:19:47 UTC (2d 48m ago) 2025-07-28 20:19:47 JST local time at Ryōtsu, Japan [?]
Course:	46° – heading 46°
Speed:	26 km/h
Dimensions:	length 75 m width 12 m draught 4.8 m
Last path:	JD4090>ais via JH0WSL
Positions stored:	99663

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.