This is the author’s first novel and given the amount of accurate details, it’s not surprising to discover that he served on a similar ship with a similar mission himself, specifically as an Ensign aboard the USS Decatur, hunting German subs in the North Atlantic. Write what you know. The novel was first published in 1951, so the experience was fairly fresh for him. Some readers will prefer to have more action in the form of actual sub battles but considering that the real drama and apprehension lies in a potential contact with a sub or group of subs and then not knowing what will happen next. Is the "Enemy" really just the German subs or is it also perhaps the men themselves, fighting against the survival instinct, fear, or the nature of the hunt?
I was pleasantly surprised by this one and I certainly learned a lot. I experienced the impact of that “I was there” feeling I always hope for in a book like this. I’m glad I took a chance on it.