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AIS vessel ALCATRAZ CLIPPER - show graphs
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Callsign: WDE4199
MMSI number: 367350050
Navigational status: Under way (engine) (0)
Vessel class: Passenger (60)
Destination: SAN FRANCISCO (ETA ***00 24:60)
Location: 37°47.93' N 122°23.61' W - locator CM87TT21SR - show map - static map
2.2 miles Northeast bearing 41° from San Francisco, San Francisco County, California, United States [?]
6.2 miles Southeast bearing 146° from Tiburon, Marin County, California, United States
41.8 miles Northwest bearing 319° from San Jose, Santa Clara County, California, United States
Last position: 2018-12-08 18:01:23 EST (23h11m ago)
2018-12-08 15:01:23 PST local time at San Francisco, United States [?]
Course: 325° – heading 511°
Dimensions: length 38 m width 11 m draught 3.3 m
Last path: WDE4199>ais via TACO
Positions stored: 1312
Stations near current position of ALCATRAZ CLIPPER - show more
callsign distance last heard - EST      callsign distance last heard - EST
CALIFORNIA HORNBLOWE75.2 yards 207°2018-12-09 16:49:34 SAN FRANCISCO BELLE94.5 yards 275°2018-12-09 01:00:38
SAN FRANCISCO SPIRIT138.1 yards 219°2018-12-09 02:41:16 DIAMOND SEAS364.4 yards 78°2018-12-01 20:58:23
CETUS476.0 yards 148°2018-12-09 17:11:06 TUG VIGILANT0.4 miles 315°2018-12-09 16:38:39
FW15200.4 miles 283°2018-12-09 17:01:24 3669695100.4 miles 35°2018-12-09 17:12:56
HARBOR QUEEN0.4 miles 324°2018-12-05 19:51:01 PILOT BOAT DRAKE0.5 miles 46°2018-12-07 12:32:50
CRYSTAL SERENITY0.6 miles 319°2018-12-09 15:02:52 AJ6BO-70.6 miles 177°2018-12-06 19:35:59
3381424370.6 miles 136°2018-12-09 14:56:08 FIREBOAT 30.6 miles 153°2018-12-09 17:12:57
DELTA CATHRYN0.7 miles 329°2018-12-08 18:32:25 W2GMD-O20.7 miles 207°2018-11-15 19:21:16
3380313620.7 miles 35°2018-12-07 09:58:20 3673801200.8 miles 40°2018-12-04 15:40:58
WARNOW MOON0.9 miles 109°2018-12-04 20:00:56 MUSIC0.9 miles 136°2018-11-10 14:34:24
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.
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