Callsign:	MACW4
MMSI number:	235094624
IMO number:	350745
Navigational status:	Under way (engine) (0)
Vessel class:	Sailing (36)
Location:	50°47.55' N 1°02.05' W - locator IO90LT50VE - show map 4.1 km East bearing 100° from Portsmouth, City of Portsmouth, England, United Kingdom [?] 6.3 km South bearing 161° from Cosham, City of Portsmouth, England, United Kingdom 101.7 km Southwest bearing 219° from London, Greater London, England, United Kingdom 103.5 km Southwest bearing 220° from City of London, Greater London, England, United Kingdom
Last position:	2025-10-12 14:13:31 UTC (25d 13h42m ago) 2025-10-12 15:13:31 BST local time at Portsmouth, United Kingdom [?]
Course:	178° – heading 511°
Speed:	8 km/h
Dimensions:	length 10 m width 4 m draught 0.0 m
Last path:	MACW4>ais via G7RUH
Positions stored:	826

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.