Callsign:	SDTR
MMSI number:	265585440
IMO number:	414582
Navigational status:	Under way (engine) (0)
Vessel class:	Passenger (60)
Location:	59°19.70' N 18°04.75' E - locator JO99AH98MS - show map 942.0 m Southeast bearing 121° from Stockholm, Stockholms Kommun, Stockholm, Sweden [?] 1.2 km South bearing 195° from Östermalm (OEstermalm), Stockholms Kommun, Stockholm, Sweden 63.8 km Southeast bearing 157° from Uppsala, Uppsala Kommun, Uppsala, Sweden
Last position:	2025-12-27 07:57:16 UTC (1d 9h36m ago) 2025-12-27 08:57:16 CET local time at Stockholm, Sweden [?]
Course:	360° – heading 511°
Speed:	0 km/h
Dimensions:	length 22 m width 5 m draught 0.0 m
Last path:	SDTR>ais via JohnexTower
Positions stored:	109456

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.