This is an amazing read, at least for sea warfare fans. For mere 1 USD, it's a must (even though it's possible to download a PDF version from the author's website). The author is a retired naval officer, and it shows. The plot is well carried out, the tactics used are sound a realistic. I enjoyed this one a lot, and I'm looking forward to reading The Seventh Angel - also available here, and Sword of Shiva, which is about to be released.
I enjoyed this series very much. In fact, this was the best of the genre that I've read so far. The first book was mindblowing. The second book matched the first one's awesomness. And this one was great, too. Unfortunately, I must say that it felt a tiny bit weaker compared to the other two. Don't get me wrong, it was still amazing, the 5 stars are well deserved. However, I feel that the book could have been a little longer, as the conclusion seemed a bit too short for me. The end felt too sudden, too quick. Still, an awesome navy thriller, very realistic, very worth reading. I do hope that more will follow.