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by pamarine on 10-07-2011 at 09:21 PM
AIS, or Automatic Identification System, is an up-and-coming technology in the Marine world that is largely similar to mode-s aircraft transponder design criteria. AIS transceivers broadcast a vessel's MMSI, speed, heading, port of destination, and other pertinent info such as vessel name, out over a discreet VHF frequency. This information is then available to any vessel with an AIS transceiver (transmit and receive) or receiver (receive only) and is made available over a NMEA 0183 connection to other AIS-compatible electronics (such as a chartplotter). And, thanks to the USCG, every commercial vessel is required by law to be equipped with an AIS transceiver. In short, think of it as a poor-man's radar or the ultimate radar enhancement (depending whether or not you have a radar ).
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Dec 15, 2011 - 6:33 PM - by NCangler