Alexander Fullerton
I see it’s been a long time since I read the first two books of this series. In this volume Fullerton’s protagonist, Nicholas Everard, is sent on a clandestine mission to Istanbul to disable the German battlecruiser SMS Goeben. Most of the book is about Everard’s submarine journey through the Dardanelles dodging mines, patrol boats, and anti-submarine nets. It’s full of technical detail, the quantity of which occasionally gets in the way of the story.