Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A gripping tale of discovery, courage, and friendship.

Ive seen Robert Kurson develop as a writer, so I was intrigued by his latest effort, Shadow Divers. His lofty reputation was certainly reflected in this masterful recount of the discovery of a German U-Boat just off the Jersey Shore. I care little about U-Boats, World War II, and diving, but I cared immensely about the heroes of this story, Chatterton and Kohler. Their courage, determination and compassion are great lessons for divers and landlubbers alike. Kurson's dominant theme of discovery transcends the physical into the spiritual and metaphysical, as his book transcends typical non-fiction into a work of art.