Callsign:	PI4577
MMSI number:	244076560
Vessel class:	Pleasure (37)
Location:	52°04.75' N 4°23.65' E - locator JO22EB78HX - show map 6.5 km Southwest bearing 215° from Voorschoten, Gemeente Voorschoten, South Holland, Netherlands [?] 7.4 km South bearing 185° from Wassenaar, Gemeente Wassenaar, South Holland, Netherlands 18.4 km North bearing 342° from Rotterdam, Gemeente Rotterdam, South Holland, Netherlands 47.0 km Southwest bearing 226° from Amsterdam, Gemeente Amsterdam, North Holland, Netherlands
Last position:	2025-06-16 05:50:09 UTC (36d 21h25m ago) 2025-06-16 07:50:09 CEST local time at Voorschoten, Netherlands [?]
Course:	48° – heading 511°
Speed:	0 km/h
Last path:	PI4577>ais via Southwood
Positions stored:	108

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.