Student driver

A new one for me, an N sign on a boat! I wonder if it's a requirement like it is for new vehicle drivers. Do people have to have a licence to operate a boat? I know absolutely nothing about boating.  :-)
I watered the garden before Bill came down for coffee mid-morning. He has a busy week of appointments coming up. He's taking part in experimental immunotherapy treatments because chemo and radiation are not options for him now. Some of the side effects of the treatment aren't pleasant, but he's coping. I'm driving him to the ferry tomorrow and will pick him up later in the week when his appointments are over. Lucky he has a friend to stay with in Victoria.