Callsign:	JD4043
MMSI number:	431008097
IMO number:	54119
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Location:	36°29.38' N 140°37.62' E - locator QM06HL57FM - show map 6.0 km Northeast bearing 65° from Funaishikawa, Ibaraki, Japan [?] 13.2 km Northeast bearing 39° from Hitachi-Naka, Ibaraki, Japan 122.3 km Northeast bearing 43° from Tokyo, Tōkyō, Japan 145.7 km Northeast bearing 37° from Yokohama-shi, Kanagawa, Japan
Last position:	2026-01-14 20:21:20 UTC (4h42m ago) 2026-01-15 05:21:20 JST local time at Funaishikawa, Japan [?]
Course:	247.5° – heading 184°
Speed:	0 km/h
Dimensions:	length 26 m width 9 m draught 0.0 m
Last path:	JD4043>ais via IC8HFW
Positions stored:	4869

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.