Hedgehog' depth charge device

Date: 1942 Reference: ADM 199/2059 Creator: Admiralty, Naval Forces, Royal Marines, Coastguard, and related bodies Catalogue context: Monthly anti-submarine reports Vol 3 Categories: Second World War Subjects: Navy Topics: Military and war Period: Second World War 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