I imagine that the nice Captain got all the new sailors together, on the first of their many days off, gave them all a nice drinky-poo, and said " I say, you chaps !! How"s this for a jolly wheeze , eh ?? Some of the older fellows know some really stirring nautical songs, which they cheerfully sing whilst doing the jobs they adore, like hauling in the anchor, or pulling the ropes that make the pretty sails flutter on the masts, and I was wondering if you would consider attending some evening classes so that you could learn some of the words and maybe join in sometimes ?? It"s up to you, of course. There"s no hurry, just sleep on it, and let your welfare advisor know when you have decided. "