I'm not ashamed to say I have a boat, a big boat, they almost confiscated it thinking it was a Russian oligarchs. It's nothing like a bus to drive though, took me a whole 20 minutes to learn to drive it, my bus licence took one pull over stop while doing my HR licence, it was really challenging to stop in 50 meters and within 1 meter of the curb from under 40kph, so was much more complicated. I've decided to wear a bus drivers hat while sailing now, as its the same thing really. I won't let cadets near it though, as they are only minibus capable, like turboprops and stuff.