Callsign:	SF7211
MMSI number:	265826580
Navigational status:	Undefined/default (15)
Vessel class:	Sailing (36)
Location:	53°33.63' N 6°18.15' E - locator JO33DN64HM - show map 22.5 km North bearing 355° from Ulrum, Gemeente De Marne, Groningen, Netherlands [?] 23.7 km Northeast bearing 29° from Anjum, Gemeente Dongeradeel, Friesland, Netherlands 41.8 km Northwest bearing 335° from Groningen, Gemeente Groningen, Groningen, Netherlands 117.3 km North bearing 7° from Zwolle, Gemeente Zwolle, Overijssel, Netherlands
Last position:	2025-08-25 11:23:18 UTC (21d 9h1m ago) 2025-08-25 13:23:18 CEST local time at Ulrum, Netherlands [?]
Course:	76° – heading 511°
Speed:	12 km/h
Dimensions:	length 12 m width 4 m draught 0.0 m
Last path:	SF7211>ais via pa2dx
Positions stored:	5160

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.