Complex sentence: After the first summer season Finnjet was laid up for the winter 2004-2005, and the route was eventually terminated after the 2005 summer season, and the ship was put up for sale.
Split into simpler sentences: After the first summer season Finnjet was laid up for the winter 2004-2005. The route was eventually terminated after the 2005 summer season, and the ship was put up for sale.