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Old 03-02-2015, 01:44 AM   #17
FlyWright
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City: California Delta and SF Bay
Country: Sacramento, CA, USA (boat in Vallejo)
Vessel Name: FlyWright
Vessel Model: Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 12,404
Quote:
Originally Posted by markpierce View Post
That is my understanding also. As well as they don't continually monitor class B AIS. I'm also under the impression that there are additional filters, so even if one has a class A, you'll not be necessarily tracked.
That's how I remember it, too. The Class B is there for their reference, but not in their primary scan.

They filter out non-essential or uninteresting Class A targets to reduce clutter. It's kind of like ATC radars that are filtered so they don't display all visual rules traffic during instrument rules operations. I presume if a non-displayed vessel checks in, they could select to display it on their "scope".
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