Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
AIS vessel KATSUMARU NO.32 - show graphs
Callsign: JD4471
MMSI number: 431012214
IMO number: 865427
Navigational status: Under way (engine) (0)
Vessel class: Cargo (70)
Destination: >JP CHB (ETA Jan24 03:00)
Location: 34°34.02' N 137°49.23' E - locator PM84VN86KB - show map
15.0 km South bearing 190° from Iwata, Shizuoka, Japan [?]
22.2 km Southwest bearing 203° from Fukuroi, Shizuoka, Japan
68.6 km Southwest bearing 229° from Shizuoka-shi, Shizuoka, Japan
107.7 km Southeast bearing 129° from Nagoya-shi, Aichi, Japan
Last position: 2026-01-23 11:37:51 UTC (12h49m ago)
2026-01-23 20:37:51 JST local time at Iwata, Japan [?]
Course: 91° – heading 93°
Speed: 20 km/h
Dimensions: length 70 m width 13 m draught 4.9 m
Last path: JD4471>ais via Gamagori1240
Positions stored: 64776
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS