Callsign:	WDJ4135
MMSI number:	367152240
IMO number:	391567
Navigational status:	Under way (engine) (0)
Vessel class:	RR 18 (Mob-83) (59)
Destination:	(ETA ***00 24:60)
Location:	37°49.54' N 122°25.16' W - locator CM87ST98QE - show map 3.5 miles North bearing 0° from San Francisco, San Francisco County, California, United States [?] 3.9 miles Southeast bearing 148° from Tiburon, Marin County, California, United States 4.1 miles Southeast bearing 143° from Belvedere, Marin County, California, United States 44.2 miles Northwest bearing 320° from San Jose, Santa Clara County, California, United States
Last position:	2025-01-23 09:17:28 EST (2d 19h41m ago) 2025-01-23 06:17:28 PST local time at San Francisco, United States [?]
Course:	321° – heading 511°
Speed:	7 MPH
Dimensions:	length 19 m width 7 m draught 1.5 m
Last path:	WDJ4135>ais via SUNSET
Positions stored:	2256

callsign		distance	last heard - EST		callsign		distance	last heard - EST
ISLANDER		71.9 yards 123°	2025-01-14 13:22:42		368093850		97.6 yards 19°	2025-01-05 12:30:46
338450095		348.8 yards 224°	2025-01-12 17:52:10		366975750		508.0 yards 133°	2025-01-25 19:59:28
367350050		510.5 yards 98°	2025-01-25 18:31:13		GOLDEN BEAR		0.3 miles 114°	2025-01-23 20:04:14
SAUSALITOBMPRESS		0.5 miles 125°	2025-01-24 23:49:46		QUIVER		0.6 miles 103°	2025-01-25 16:42:22
338349316		0.6 miles 328°	2025-01-02 13:48:04		EVER LIBERAL		0.7 miles 157°	2025-01-24 20:16:58
T0WBOATUS_ALAMEDA		0.7 miles 180°	2025-01-25 14:36:42		MA`S ROVER		0.8 miles 185°	2025-01-25 16:24:03
OLD BLUE		0.8 miles 189°	2025-01-08 14:26:07		SV ATTITUDE		0.8 miles 215°	2025-01-17 00:57:29
338368994		0.8 miles 224°	2025-01-09 16:12:41		367338290		0.8 miles 142°	2025-01-25 21:32:54
368387680		0.9 miles 216°	2025-01-17 20:12:40		STAR THROWER		0.9 miles 177°	2025-01-16 17:57:27
P V CALIFORNIA		0.9 miles 204°	2025-01-23 13:18:37		367085940		1.0 miles 79°	2025-01-20 18:05:10

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.