August 20, 2007 06:27
August 20, 2007 18:19
It means the vessel's name has not been received by your single channel AIS receiver. Read up on the frequency of the timing and availability of AIS data here..
http://www.navcen.uscg.gov/enav/ais/what...dcasts.htm
Static information such as vessel name does not update as frequently as dynamic real time data such as speed and course.
http://www.navcen.uscg.gov/enav/ais/what...dcasts.htm
Static information such as vessel name does not update as frequently as dynamic real time data such as speed and course.
August 21, 2007 02:22
So, would I be right in thinking that the NASA engine is a Class A receiever?
http://www.navcen.uscg.gov/enav/ais/types_of_AIS.htm
http://www.navcen.uscg.gov/enav/ais/types_of_AIS.htm