U - 129

Eric Scheer commanded U-129 during the latter half of World War Two. He was a highly respected submarine commander with accolades, citations and awards that go with a man driven to succeed for his beloved Germany. As the allies and General Alfred Jodl sign the armistice that ends the war, a set of occurrences outside of Eric's control sees his submarine attacked and presumed sunk with no records of where or how.
Move forward seventy-five years and Eric's extremely wealthy great-granddaughter, Evette, decides it is time to find out what happened to Eric and his U-boat. She has sketchy information that leads her to believe something or someone attacked it, but she has no location or the circumstances as to why. She must rely on archives that are still under lock and key and recorded eyewitness accounts of an explosion at sea.
The reason Evette wants to find her great-grandfather's U-boat is to give her great-grandmother, Hanna, some closure as to what happened to her beloved Eric. She also wishes to bring it back to the surface and open it up as a maritime museum dedicated to the men who served in such machines during the war. What results is something nobody could have foreseen, and Evette's great-grandmother's words come back to haunt her: You should be aware that disturbing the dead can bring about consequences, Evette, unforeseen consequences that can have dire results.
The dead should be left alone for eternity, it's not right to dig them up.