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World War One Audit of Surviving Remains
Date 31 July 2013
Event ID 962947
Category Descriptive Accounts
Type World War One Audit of Surviving Remains
Permalink http://canmore.org.uk/event/962947
The Firth was obstructed by an anti-submarine boom in the First World War.
No boom is visible on RAF air photographs taken during the Second World War (Sortie M_058 / 241E, Frame 00A19 flown 6 April 1941 and 106G/UK751, 6038-6040, flown 31 August 1945).
Information from HS/RCAHMS World War One Audit Project (GJB) and (AKK) 31 July 2013.