Callsign:	WDF6504
MMSI number:	367474960
IMO number:	438078
Navigational status:	Undefined/default (15)
Vessel class:	Port tender (53)
Destination:	(ETA ***00 24:60)
Location:	47°17.02' N 122°26.32' W - locator CN87SG78IB - show map 3.4 km North bearing 7° from Tacoma, Pierce County, Washington, United States [?] 7.6 km Northeast bearing 50° from Fircrest, Pierce County, Washington, United States 10.0 km Northeast bearing 58° from University Place, Pierce County, Washington, United States 36.7 km South bearing 193° from Seattle, King County, Washington, United States
Last position:	2025-11-18 20:44:49 UTC (9d 18h39m ago) 2025-11-18 12:44:49 PST local time at Tacoma, United States [?]
Course:	151° – heading 511°
Speed:	0 km/h
Dimensions:	length 21 m width 4 m draught 0.0 m
Last path:	WDF6504>ais via KB7RYY
Positions stored:	76028

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.