Callsign:	SENTRY
MMSI number:	338340854
IMO number:	554200
Navigational status:	Undefined/default (15)
Vessel class:	(0)
Destination:	CLASS B
Location:	47°09.67' N 122°52.44' W - locator CN87ND58CP - show map 8.8 miles Northwest bearing 330° from Tanglewilde-Thompson Place, Thurston County, Washington, United States [?] 9.1 miles North bearing 345° from Lacey, Thurston County, Washington, United States 21.1 miles West bearing 253° from Tacoma, Pierce County, Washington, United States 39.8 miles Southwest bearing 220° from Seattle, King County, Washington, United States
Last position:	2025-01-14 12:11:26 EST (22d 19h52m ago) 2025-01-14 09:11:26 PST local time at Tanglewilde-Thompson Place, United States [?]
Course:	50° – heading 511°
Speed:	31 MPH
Dimensions:	length 14 m width 4 m draught 0.0 m
Last path:	SENTRY>ais via Teachgeek
Positions stored:	10126

callsign		distance	last heard - EST		callsign		distance	last heard - EST
231346		0.6 miles 21°	2025-02-06 08:00:37		FW9464		1.7 miles 9°	2025-02-06 08:01:53
RV SKOOKUM		3.2 miles 298°	2025-01-09 17:32:05		K7HTZ-10		4.1 miles 109°	2025-02-06 07:19:05
K7HTZ-11		4.1 miles 109°	2025-02-05 01:16:28		ADVENTURE		4.6 miles 308°	2025-01-31 20:54:00
EW4160		4.8 miles 304°	2025-02-06 08:00:39		SATURN		4.9 miles 209°	2025-02-01 20:32:59
KK7NYX-Y		5.1 miles 166°	2025-02-06 07:46:02		KK7NYX-D		5.1 miles 166°	2025-02-06 07:45:22
KK7NYX-15		5.1 miles 166°	2025-01-29 20:12:42		FW9097		5.4 miles 181°	2025-02-06 08:00:40
DW0249		5.8 miles 125°	2025-02-06 08:00:15		KB8BMY-10		6.3 miles 135°	2025-02-05 20:15:40
KB8BMY-7		6.3 miles 135°	2025-01-25 21:14:21		KB8BMY-5		6.3 miles 135°	2025-01-18 13:17:27
Teachgeek		6.8 miles 299°	2025-02-06 08:03:16		AG7OO-9		6.8 miles 176°	2025-02-04 14:49:38
W7PLC-9		6.9 miles 197°	2025-01-14 15:31:39		MAKO		7.0 miles 189°	2025-02-01 16:23:57

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.