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At first I thought the author included too much information but as I reflect on it I think it was all necessary and added to the book. Divers find a German U-boat in the deep section of the sea. Only accomplished divers can go that deep to explore. Over time, it becomes the mission of two divers to determine which U-boat this is. The dangers involved in exploring the vessel to find the identification of the boat are enormous. Their mission to 🔽