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.