Visby is the name of the ship behind the ferry. She plies a route between Stockholm and Gotland. Wikipedia has a few facts in Swedish and a nice photo: https://sv.wikipedia.org/wiki/S/S_Visby
The ferry ferries people between "Sandham" (wherever that is) and the islands in the Stockholm a
Ship Carinthia (It says Carynthia, but I doubt that - I will look it up). Yes it is Cunard's Carinthia. My posting is severely cropped, the original has the Kungsholm on the left side, but it went over two pages, and that makes it difficult to make a good copy.