This is a comprehensive and fully revised guide to the Orkney wrecks - the intact remains of the scuttled German fleet, U-boats, steamers, tugs and Churchill's "Blockships". The author uses a mixture of historical narrative of the scuttling and subsequent salvage to describe the events at the end of World War I. The book includes details of the site, while the author also considers new diving opportunities created by increasing use of nitrox and trimix amongst sport divers. With a special surveys of the 68m-deep HMS Hampshire and 58-deep HMS Strathgarry were conducted for the book, which must rank as the top source on Scapa Flow diving at the close of the millenium. Illustrated in colour and black-and-white.