Callsign:	WDI7644
MMSI number:	367730720
Navigational status:	Undefined/default (15)
Vessel class:	Passenger (60)
Location:	42°21.38' N 71°03.00' W - locator FN42LI45AM - show map 835.0 m East bearing 106° from Boston, Suffolk County, Massachusetts, United States [?] 2.6 km North bearing 359° from South Boston, Suffolk County, Massachusetts, United States 4.2 km South bearing 200° from Chelsea, Suffolk County, Massachusetts, United States
Last position:	2025-12-21 18:57:00 UTC (4m17s ago) 2025-12-21 13:57:00 EST local time at Boston, United States [?]
Course:	276.200012° – heading 511°
Speed:	1 km/h
Dimensions:	length 33 m width 8 m draught 0.0 m
Last path:	WDI7644>ais via kx1t
Positions stored:	62400

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.