Callsign:	WRTF
MMSI number:	367067110
IMO number:	250660
Navigational status:	Under way (engine) (0)
Vessel class:	Tanker (89)
Destination:	SFO A9
Location:	37°45.95' N 122°21.90' W - locator CM87TS63ET - show map 4.9 km East bearing 102° from San Francisco, San Francisco County, California, United States [?] 10.8 km Northeast bearing 52° from Daly City, San Mateo County, California, United States 62.9 km Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position:	2025-11-21 18:11:39 UTC (17d 1h50m ago) 2025-11-21 10:11:39 PST local time at San Francisco, United States [?]
Course:	160° – heading 158°
Speed:	18 km/h
Dimensions:	length 273 m width 46 m draught 12.8 m
Last path:	WRTF>ais via AA6CE
Positions stored:	63099

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.