"An essential addition and corrective to accounts of the submarine war in European waters during World War I and World War II." - Paul G. Halpern, Emeritus, Florida State University, USA"Innes McCartney brilliantly shows how archaeology has rewritten the history of submarine warfare in a compelling look at the extensive underwater battlefield off Britain’s coasts. This is a must-have in the library of any naval enthusiast, scholar and archaeologist, or wreck explorer." - James P. Delgado, National Oceanic and Atmospheric Administration, Maritime Heritage, USA"Collating the results of some 15 years of fieldwork and archival research, this volume presents an assessment of the records of wartime U-boat losses, compiled by allied naval intelligence, with observed wreck sites present on the seabed. The work is enhanced by analysis of some of the intelligence matters related to submarine tracking and attacks." - Mark Dunkley, Historic England, UK