Human torpedo attacks from the Italian tanker SS Olterra on shipping at Gibraltar

Date: 1942-1943 Reference: KV 4/260 (15) Creator: Security Service Catalogue context: History of the Security Intelligence Department of the Defence Security Office, Gibraltar 1939-1945. An illustrated account of the wartime work of MI5's Gibraltar office in the fields of counter-espionage and counter-sabotage. The file contains details of German intelligence operations against the base and of the Defence Security Office's use of double agents to forestall them. Also included is an account of the Italian human torpedo attacks on shipping in Gibraltar Harbour Categories: Overseas; Second World War Subjects: Agents, extremists, traitors; Europe and Russia; Intelligence; Weapons Topics: International trade and affairs; Military and war Period: Second World War Places: Gibraltar; Italy Copyright information: Copyright clearance for publication is not required, except in the case of documents in third-party copyright. Usage terms: https://www.nationalarchives.gov.uk/documents/information-management/use-of-tna-materials.pdf