Callsign:	4WO4
MMSI number:	341702000
IMO number:	9178020
Navigational status:	Moored (5)
Vessel class:	Tug (52)
Destination:	EEPRN
Location:	58°23.15' N 24°28.93' E - locator KO28FJ72UO - show map 866.2 m West bearing 270° from Pärnu, Pärnu linn, Pärnumaa, Estonia [?] 4.7 km South bearing 189° from Sauga, Sauga vald, Pärnumaa, Estonia 117.8 km South bearing 188° from Tallinn, Tallinna linn, Harjumaa, Estonia
Last position:	2026-01-29 21:55:39 UTC (18h46m ago) 2026-01-29 23:55:39 EET local time at Pärnu, Estonia [?]
Course:	73° – heading 20°
Speed:	0 km/h
Dimensions:	length 31 m width 9 m draught 3.5 m
Last path:	4WO4>ais via es8tjm
Positions stored:	80990

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.