I am glad I got involved in this discussion as it has clarified some things for me, especially whether there are AIS displays which can have Class B vessels filtered from their screens. As pvb has shown some do exist.
It is interesting though that my previous searches had not found them; but I had been looking at current products. Looking at current Furuno products this feature appears to have been excluded now - unless I am missing it. I have looked at the FMD3200/3300 and FA-170 units.
Could it be that manufacturers now think this might not be such a good feature? Of course there will still be some older units out there.
As stated by others IMO do not present AIS as a Collision Avoidance tool but do say it might be one day.
