I finished Ghost Fleet a while back. It was a real good book that kept me engaged throughout and had a good mixture of war, drama and philosophy. This book reference The Art of War by Sun Tzu a couple times, so I read it. It was eye-opening and is worthy enough for multiple reads. There's a lot to unpack and is more of an instructional/strategy book than a novel. Not to get political, but it's pretty eerie to see parallels to some of the concepts in this book and what's been happening in the United States...
I read What If? by Randall Munroe recently. It's an entertaining book that takes abnormal deep dives into answering obscure questions like, "What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?"
I finished Ordinary Grace by William Kent Krueger, yesterday. This was one of the most enjoyable novels I've read in recent memory. It's listed as a mystery, but Krueger admittedly stated that this novel of much looser than most "mystery" novels. I can see this being adapted to the screen. Movie, mini series etc. I was reminded of the film Stand By Me, which was the screen adaptation of the story, "The Body" by Stephen King. If you like period pieces, coming of age stories and/or philosophical and religion dichotomies - I'd recommend this one.