Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
AIS vessel ROYAL PRINCESS - show graphs
Callsign: ZCEI3
MMSI number: 310661000
IMO number: 584712
Navigational status: Under way (engine) (0)
Vessel class: Passenger (69)
Destination: US SFO
Location: 37°01.87' N 123°03.69' W - locator CM87LA27OL - show map
73.4 km Southwest bearing 221° from Moss Beach, San Mateo County, California, United States [?]
73.8 km Southwest bearing 230° from Half Moon Bay, San Mateo County, California, United States
100.2 km Southwest bearing 215° from San Francisco, San Francisco County, California, United States
108.8 km West bearing 252° from San Jose, Santa Clara County, California, United States
Last position: 2026-01-13 11:39:28 UTC (27d 22h51m ago)
2026-01-13 03:39:28 PST local time at Moss Beach, United States [?]
Course: 158° – heading 156°
Speed: 34 km/h
Dimensions: length 254 m width 32 m draught 8.6 m
Last path: ZCEI3>ais via SUNSET
Positions stored: 33588
About this site
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS