Thanks for answers. I'll buy the cheapest one (London 2001).
I wanted to buy also "The type VII U-Boat. Anatomy of the ship". I have seen it in amazon.co.uk for 21 euros and in amazon.de for 37 euros, but the first is from Conway Maritime Press Ltd
http://www.amazon.co.uk/Type-VII-U-b...2439031&sr=8-1
and the other is from Naval Institute Press:
http://www.amazon.de/Type-VII-U-Boat...2432429&sr=8-3
They seem to have the same number of pages (96 the former vs 95 the latter), and a bit thicker the later (1.6 cm vs 2 cm). Do you know if it is the same? Maybe both are the same but the latter is better paper/print quality?
I am now in a rush, any help is appreciated.
Thanks a lot!