Boat, which is best not to catch up

Every evening a strange blue boat sails through the channel in the canal without passengers and a captain. It appears as if from a splash of a fountain, sweeps past, pulling ducks, and disappears behind a turn.

Once, some daredevil on the boat decided to catch up with the blue boat. He swam up to him, climbed aboard ... and a few days later his empty boat floated down the canal until the police picked her up.

And the blue ship still appears in the evenings on the canal. But no one bothers him anymore.