Callsign:	MAKR4
MMSI number:	232005591
IMO number:	803687
Navigational status:	Under way (engine) (0)
Vessel class:	Tug (52)
Location:	56°00.20' N 3°24.47' W - locator IO86HA10BT - show map 1.2 km Southwest bearing 239° from North Queensferry, Fife, Scotland, United Kingdom [?] 2.3 km North bearing 348° from Queensferry, Scotland, United Kingdom 14.3 km Northwest bearing 294° from Edinburgh, City of Edinburgh, Scotland, United Kingdom 55.1 km East bearing 73° from Glasgow, Glasgow City, Scotland, United Kingdom
Last position:	2025-09-20 10:54:38 UTC (2h47m ago) 2025-09-20 11:54:38 BST local time at North Queensferry, United Kingdom [?]
Course:	177.4°
Speed:	27 km/h
Dimensions:	length 12 m width 4 m draught 0.0 m
Last path:	MAKR4>ais via GM7HHB
Positions stored:	17735

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.