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Clyde Defences, Cloch Point To Dunoon Anti-submarine Boom

Boom Defence (First World War), Boom Defence (Second World War)

Site Name Clyde Defences, Cloch Point To Dunoon Anti-submarine Boom

Classification Boom Defence (First World War), Boom Defence (Second World War)

Alternative Name(s) World War I And World War Ii Clyde Defences; Firth Of Clyde; Inner Clyde Estuary

Canmore ID 239524

Site Number NS27NW 137

NGR NS 2030 7590

NGR Description NS c. 2030 7590

Datum OSGB36 - NGR


Ordnance Survey licence number 100057073. All rights reserved.
Canmore Disclaimer. © Copyright and database right 2020.

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Administrative Areas

  • Council Inverclyde
  • Parish Inverkip
  • Former Region Strathclyde
  • Former District Inverclyde
  • Former County Renfrewshire

World War One Audit of Surviving Remains (3 July 2013)

Maps in a War Office file (The National Archives WO 78/5182) show an anti-submarine boom between Cloch Point (where mooring blocks for the boom survive) and Dunoon in both First and Second World Wars. The maps suggest that the Dunoon end of the boom was attached on the shore below Castle Hill. In the First World War the ‘gate’ into the upper Clyde was nearer the Dunoon bank.

Information from HS/RCAHMS World War One Audit Project (GJB) 3 July 2013.

Archaeology Notes

NS27NW 137 c. 2030 7590

For concrete blocks forming the E (Cloch Point) end of this structure, see NS27NW 173.

A First and Second World War anti-submarine boom is known to have been constructed between a point at or near to Cloch Point across the Firth of Clyde to Dunoon (NS 176 763). The location of the boom ends is uncertain.

Information from Defence of Britain Project form, (J Cameron), 1997.


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.


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