Callsign:	WDH4878
MMSI number:	367125330
Navigational status:	Reserved (11)
Vessel class:	Tug (52)
Destination:	SAN JUAN PUERTO RICO
Location:	28°12.06' N 78°32.13' W - locator FL08RE58RF - show map
Last position:	2025-03-09 02:29:24 UTC (6d 18h26m ago)
Course:	130° – heading 130°
Speed:	16 km/h
Dimensions:	draught 5.4 m
Last path:	WDH4878>ais via W1SPG
Positions stored:	44

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.