Callsign:	BOOK4
MMSI number:	413274380
IMO number:	331127
Navigational status:	Under way (engine) (0)
Vessel class:	Cargo, carrying hazard/pollutant cat A (71)
Destination:	JP TXD (ETA Aug31 08:00)
Location:	34°23.87' N 134°15.32' E - locator PM74DJ05PL - show map 11.2 km Northeast bearing 42° from Shido, Kagawa, Japan [?] 11.6 km Southeast bearing 145° from Tonoshō, Kagawa, Japan 91.0 km West bearing 249° from Kōbe-shi, Hyōgo, Japan 112.8 km West bearing 260° from Sakai, Ōsaka, Japan
Last position:	2025-09-20 00:12:47 UTC (3m57s ago) 2025-09-20 09:12:47 JST local time at Shido, Japan [?]
Course:	089.5° – heading 91°
Speed:	25 km/h
Dimensions:	length 145 m width 22 m draught 7.2 m
Last path:	BOOK4>ais via JG3HLX
Positions stored:	26190

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.