Callsign:	WDH4039
MMSI number:	367613560
Navigational status:	Undefined/default (15)
Vessel class:	Sailing (36)
Location:	41°32.45' N 70°48.27' W - locator FN41OM39KS - show map 13.1 km South bearing 176° from Mattapoisett, Plymouth County, Massachusetts, United States [?] 13.9 km South bearing 179° from Mattapoisett Center, Plymouth County, Massachusetts, United States 90.4 km South bearing 167° from South Boston, Suffolk County, Massachusetts, United States 93.3 km South bearing 167° from Boston, Suffolk County, Massachusetts, United States
Last position:	2025-07-03 18:26:52 UTC (154d 21h23m ago) 2025-07-03 14:26:52 EDT local time at Mattapoisett, United States [?]
Course:	91°
Speed:	14 km/h
Dimensions:	length 11 m width 3 m draught 0.0 m
Last path:	WDH4039>ais via K1XP
Positions stored:	9

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.