British Intelligence in the Second World War

Its Influence on Strategy and Operations, vol 3

By Hinsley, F.H. with Thomas, E.E., Ransom, C.F.G., and Knight, R.C.
1988, HMSO, London
ISBN 0116309350

Descripton: A magisterial official history of British intelligence during WWII. Three volumes (Volume 3 has two parts). Each volume contains one or more chapters on the war at sea.