Watch FMovies. A trip on the Swedish lake Mälaren by a 115-year-old steamboat. The journey between Stockholm and Mariefred takes 3,5 hours. The steamboat Mariefred was manufactured over a hundred years ago and is one of the last steam-powered vessels on the lake. The steam whistle sounds when Maja, as she is called in Mariefred, steers into the bay towards the small town. A fanfare for the summer!