Roger, despite what the others have said so far, Don and Tom, there are no
special rules that I'm aware of regarding ferries. There are some for
approaching large vessels, but I can't see how they would apply to a ferry
that can have twice or three times your speed on open water. If there are,
I'd love to see a link.

I looked on the Washington State ferry system web site but couldn't find
anything. I've emailed them to ask about it, and I'll post their response
when I hear from them.

Tom Dacon