Callsign:	338157577
MMSI number:	338157577
Location:	37°51.47' N 122°21.44' W - locator CM87TU75CU - show map 5.5 miles East bearing 101° from Tiburon, Marin County, California, United States [?] 6.6 miles Northeast bearing 31° from San Francisco, San Francisco County, California, United States 43.8 miles Northwest bearing 325° from San Jose, Santa Clara County, California, United States
Last position:	2025-01-11 14:35:16 EST (27d 8h23m ago) 2025-01-11 11:35:16 PST local time at Tiburon, United States [?]
Course:	272° – heading 511°
Speed:	7 MPH
Last path:	338157577>ais via SUNSET
Positions stored:	2

callsign		distance	last heard - EST		callsign		distance	last heard - EST
GRACE		210.9 yards 109°	2025-01-25 16:01:25		T0WBOATUS_ALAMEDA		0.8 miles 200°	2025-02-05 11:47:19
COASTAL MOON		1.0 miles 191°	2025-01-11 16:22:25		EMPRESS HORNBLOWER		1.2 miles 228°	2025-01-22 22:39:01
SV MOON DANCE		1.3 miles 1°	2025-01-21 14:52:05		Z FOUR		1.5 miles 261°	2025-02-07 22:15:51
BEARCAT		1.8 miles 263°	2025-02-07 19:49:06		CARINA		1.9 miles 281°	2025-02-07 21:13:35
SYMPHONY		1.9 miles 300°	2025-01-25 13:46:13		338412656		2.0 miles 251°	2025-02-07 17:07:36
WEST WIND		2.1 miles 221°	2025-01-23 14:01:56		LASSEN		2.1 miles 264°	2025-02-07 02:29:01
PISCES		2.1 miles 262°	2025-02-07 22:11:46		LYRA		2.2 miles 261°	2025-02-07 22:55:55
SAN FRANCISCO		2.2 miles 263°	2025-02-06 14:02:11		367389840		2.3 miles 273°	2025-01-27 19:01:21
368144290		2.4 miles 236°	2025-02-06 13:57:35		MERLOT COMMODORE		2.4 miles 225°	2025-01-25 18:46:54
367085940		2.5 miles 255°	2025-01-26 15:53:38		DEL NORTE		2.5 miles 265°	2025-02-03 15:00:14

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.