Despite other stuff like family and other hobbies I was able to get some progress. Originally I planned to sand the hull and fix the decks. Unfortunately the old kit showed some deficits. All parts larger than 5cm are skewed and distorted. Therefore the hull sanding was postponed and a correction of the decks and superstructure envisaged in order to achieve a proper overall view.
I started with the quarterdeck and the engine housing. It took me 3 full hours to assemble the engine house due to the distortions of the original parts. And after the sanding most of the engravings were also gone.