Following the launch of trove.scot in February 2025 we are now planning the retiral of some of our webservices. Canmore will be switched off on 24th June 2025. Information about the closure can be found on the HES website: Retiral of HES web services | Historic Environment Scotland
Forth Defences, Inner, Submarine Boom
Boom Defence(S) (First World War)
Site Name Forth Defences, Inner, Submarine Boom
Classification Boom Defence(S) (First World War)
Canmore ID 332187
Site Number NT17NW 318
NGR NT 13474 79547
Datum OSGB36 - NGR
Permalink http://canmore.org.uk/site/332187
- Council Edinburgh, City Of
- Parish Dalmeny
- Former Region Lothian
- Former District City Of Edinburgh
- Former County West Lothian
A chart on a War Office file (The National Archives WO 78/5179) dated August 1916 shows the location of the anti-submarine and anti-destroyer booms and nets in the Forth. There are four lines of defence, the outer (easternmost) two being associated with the 'Outer' line of gun batteries in Leith and Kinghorn and on the island of Inchkeith.
The innermost line of defence was provided by submarine nets below the spans of the railway bridge. The nets were provided with gates for ships to pass through.
Information from HS/RCAHMS World War One Audit Project (GJB) 23 August 2013.
Project (March 2013 - September 2013)
A project to characterise the quantity and quality of the Scottish resource of known surviving remains of the First World War. Carried out in partnership between Historic Scotland and RCAHMS.
