Callsign:	JD4171
MMSI number:	431009571
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (87)
Location:	34°07.45' N 134°41.00' E - locator PM74IC19XT - show map 9.0 km Southeast bearing 137° from Naruto, Tokushima, Japan [?] 14.3 km South bearing 192° from Fukura, Hyōgo, Japan 77.9 km Southwest bearing 216° from Kōbe-shi, Hyōgo, Japan 98.2 km Southwest bearing 230° from Ōsaka-shi, Ōsaka, Japan
Last position:	2025-11-11 09:27:16 UTC (19d 23h27m ago) 2025-11-11 18:27:16 JST local time at Naruto, Japan [?]
Course:	165° – heading 164°
Speed:	21 km/h
Dimensions:	length 51 m width 8 m draught 0.0 m
Last path:	JD4171>ais via JG3HLX
Positions stored:	9938

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.