U-BOAT ARCHIVE Vol 7

Technical report of "U-570" (HMS "Graph"). "U-570" was, in August 1941, the first enemy submarine to surrender intact to the Allies. There were only two such occurrences during World War II. The Americans captured "U-505" in June 1944, off the west coast of Africa. She never went to sea again and found a last resting place in front of the Museum of Science and Industry in Chicago. "U-570", on the other hand, did go to sea again - under the White Ensign. This Technical Report was compiled for the Admiralty in January 1943 whilst HMS "Graph" was in dry-dock undergoing a refit. It is a thorough examination of the boat and its equipment. The torpedoes, guns, the firing trials and comments on German Navy practice as against British Navy practice etc. In addition, there is a copy of the report on exercises carried for the United States Navy. It is a study on the performance of the boat, underwater endurance, diving and surfacing characteristics, the recharging of the batteries and air supply, the boat's behaviour, simulated exercises and exercise summaries. Included are a number of illustrations on "resilient mountings", the periscope (its optical arrangement and diagrammatic arrangements), two fold-outs illustrating the docking plan and watertight compartments.