Callsign:	M-31
MMSI number:	367507210
Navigational status:	Undefined/default (15)
Vessel class:	SAR (51)
Location:	42°21.73' N 71°01.60' W - locator FN42LI66TW - show map 2.8 km East bearing 81° from Boston, Suffolk County, Massachusetts, United States [?] 3.3 km South bearing 171° from Chelsea, Suffolk County, Massachusetts, United States 3.7 km Northeast bearing 30° from South Boston, Suffolk County, Massachusetts, United States 5.3 km South bearing 193° from Revere, Suffolk County, Massachusetts, United States
Last position:	2025-02-20 02:28:28 UTC (2m24s ago) 2025-02-19 21:28:28 EST local time at Boston, United States [?]
Course:	230.5° – heading 197°
Speed:	0 km/h
Dimensions:	length 24 m width 8 m draught 0.0 m
Last path:	M-31>ais via kx1t
Positions stored:	25961

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.