Callsign:	WDF3974
MMSI number:	368557000
IMO number:	504267
Navigational status:	Undefined/default (15)
Vessel class:	Fishing (30)
Location:	37°47.68' N 122°32.39' W - locator CM87RT50FR - show map 8.6 km Southwest bearing 214° from Sausalito, Marin County, California, United States [?] 10.8 km West bearing 282° from San Francisco, San Francisco County, California, United States 76.1 km Northwest bearing 312° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-03 21:42:42 UTC (14d 9h13m ago) 2025-11-03 13:42:42 PST local time at Sausalito, United States [?]
Course:	63° – heading 511°
Speed:	18 km/h
Dimensions:	length 17 m width 5 m draught 0.0 m
Last path:	WDF3974>ais via SUNSET
Positions stored:	6181

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.