Callsign:	YJWP4
MMSI number:	577593000
IMO number:	924844
Navigational status:	Under way (sailing) (8)
Vessel class:	Sailing (36)
Destination:	AMSTERDAM
Location:	50°23.72' N 0°24.51' W - locator IO90TJ04XU - show map 46.4 km South bearing 179° from Goring-by-Sea, West Sussex, England, United Kingdom [?] 46.4 km Southeast bearing 144° from Selsey, West Sussex, England, United Kingdom 90.1 km Southeast bearing 128° from Southampton, City of Southampton, England, United Kingdom 124.3 km South bearing 161° from Reading, Borough of Reading, England, United Kingdom
Last position:	2025-06-22 20:56:34 UTC (30d 19h39m ago) 2025-06-22 21:56:34 BST local time at Goring-by-Sea, United Kingdom [?]
Course:	100° – heading 511°
Speed:	12 km/h
Dimensions:	length 40 m width 6 m draught 3.0 m
Last path:	YJWP4>ais via G7RUH
Positions stored:	1324

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.