Kostaja

Entertaining romp. A pirate scifi thriller. Some pretty interesting world-building, I found the whole looking for treasures and listening to the messages from the bones quite interesting, and the world seemed to have some real depth and layers to it.

In Finland this is not particularly marketed as YA; reading those comments here on Goodreads do make sense. This is not like his usual style in that sense, and that's an explanation. But it's light entertainment, and as such, works quite well.