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AIS vessel KOYO MARU - show graphs
Callsign: JD3908
MMSI number: 431006813
IMO number: 774733
Navigational status: Under way (engine) (0)
Vessel class: Cargo, carrying hazard/pollutant cat C (73)
Destination: >JP MUR SEC-3 OFF
Location: 37°43.39' N 138°13.17' E - locator PM97CR63IN - show map
44.2 km Southwest bearing 205° from Ryōtsu, Niigata, Japan [?]
49.2 km Northwest bearing 324° from Kashiwazaki, Niigata, Japan
73.3 km West bearing 255° from Niigata-shi, Niigata, Japan
119.1 km North bearing 2° from Nagano-shi, Nagano, Japan
Last position: 2025-08-06 22:27:44 UTC (1d 8h55m ago)
2025-08-07 07:27:44 JST local time at Ryōtsu, Japan [?]
Course: 79° – heading 79°
Speed: 26 km/h
Dimensions: length 99 m width 16 m draught 5.0 m
Last path: JD3908>ais via JH0WSL
Positions stored: 45427
About this site
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.
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