Boaters from Norfolk, perhaps?

No, not us, but the crew of Bishy Barny Bee.

We hadn't heard the term before coming to Norfolk, but we now know what it is. There's a clue to the right of the porthole.

On the four leaf clover is a bishy barney bee. More commonly known as a ladybird.

The boat was entering Crick Marina (or was it the brokers' next door?) last month.