Hi jukka, just finished reading it, although not over indulgent with the U-boat activity side of the occupation, I found the background details of what went on in the preparation and management side of running occupied active naval facillites in a distanct land.Then following on from the fate of the ones trapped at the wars end, looking at what cost to each port area to how the ports have moved on post war. Verdict, a good read, worth the money. John