Received a copy of this book the previous week.
It's pretty interesting so far. Nicely but not overwhelmingly detailed, interesting photos, and plenty of crisp, detailed maps and diagrams. Kind of surprised that this is apparently the only book out there on these ships. I remember seeing these ships in
Janes Fighting Ships of World War One and thinking they were really cool, if a little limited in what they were actually capable of. I spent $25 for a second-hand copy of the paperback on Amazon, which is a heck of a lot better than the $68 they want for a new hardcover!