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 SEIWA - show graphs
Callsign: JD4473
MMSI number: 431012675
IMO number: 837585
Navigational status: Under way (engine) (0)
Vessel class: Tanker (80)
Destination: >JP YOK NGI LPG2 (ETA Sep21 09:00)
Location: 34°16.10' N 137°07.41' E - locator PM84NG44TJ - show map
34.6 km Southeast bearing 134° from Toba, Mie, Japan [?]
45.6 km Southeast bearing 121° from Ise, Mie, Japan
103.4 km South bearing 169° from Nagoya-shi, Aichi, Japan
139.5 km Southwest bearing 236° from Shizuoka-shi, Shizuoka, Japan
Last position: 2025-09-20 12:24:50 UTC (1d 1h46m ago)
2025-09-20 21:24:50 JST local time at Toba, Japan [?]
Course: 61° – heading 59°
Speed: 26 km/h
Dimensions: length 71 m width 12 m draught 4.5 m
Last path: JD4473>ais via Gamagori1240
Positions stored: 41906
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