A lot of other things have got in the way of my promised review and so I have only just got up to the end of the First World war.
I will give a full review when I finish the book but I think that David Merriman's recommendation of Norman Friedman is justified. This has to be THE book for anyone interested in the history of British submarines.
It is not just the welcome inclusion of John Lambert's plans but the depth of Friedman's research. He has gone back to the original sources and gives a fresh perspective of British submarine developments. Interesting that, unlike many authors, he is quite positive about controversial classes like the K and M. I suppose it is easy to be wise after the event.