Callsign:	MDST4
MMSI number:	235015273
IMO number:	296858
Navigational status:	Undefined/default (15)
Vessel class:	Sailing (36)
Location:	50°51.32' N 1°18.61' W - locator IO90IU25SG - show map 10.3 km North bearing 355° from Cowes, Isle of Wight, England, United Kingdom [?] 10.6 km North bearing 5° from Gurnard, Isle of Wight, England, United Kingdom 109.9 km Southwest bearing 229° from London, Greater London, England, United Kingdom 112.0 km Southwest bearing 230° from City of London, Greater London, England, United Kingdom
Last position:	2025-10-07 14:49:37 UTC (7d 8h40m ago) 2025-10-07 15:49:37 BST local time at Cowes, United Kingdom [?]
Course:	350° – heading 511°
Speed:	8 km/h
Dimensions:	length 12 m width 4 m draught 0.0 m
Last path:	MDST4>ais via G7RUH
Positions stored:	2574

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.