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We are often asked, do commercial vessels filter out Class B AIS transmissions or at least ignore them if they see them? We can't say for all vessels but here is an article that talks about the value of all AIS for one group of fast ferries in our area - the Victoria Clippers.

The U.S. Coast Guard Navigation Center (NAVCEN) recently created a voluntary service that enables mariners to verify compliance with AIS carriage requirements.