I read The Good Shepherd and gave it five stars.
Here is my review on Goodreads:
There are a few books by C. S. Forester that I have not read. This was one. I was not so sure at the beginning, but by the end, I was glad I had taken the time to read it. Forester often starts slowly but by the the second or third chapter, I found myself captivated and convinced once more that he has a way of describing men, actions against an enemy and, of course, the sea in a way that is unique and, above all, masterful.