I really liked this book. There is a lot of history in it, but done in such a way that it still is a very enjoyable novel. The characters are ok. The story is very interesting. I knew nothing about engineering in Norway or Afrika. Jan Guillou mixes the explanation of how things work very well with the story. It never gets boring.
For me there was only one negative thing about this book, it continued on too long. I think he should have stopped in 1913…