Historic England research records

Historic England Research Records

Portland Inner Breakwater
Hob Uid: 868156
Location : Dorset Portland
Grid Ref : SY6997507437
Summary : Part of the Portland Breakwater constructed between 1849 and 1872. It is 1700 feet long and has a series of casemates facing in towards the harbour. It terminates in a small fort at the south ship channel end. It is probably here that a 12-pounder, 12-hundredweight ,gun heavy anti-aircraft gun was mounted in 1917.
More information : (SY 69767427 to SY 70207447) Inner Breakwater [NAT]. (1) The Inner Breakwater (HM Naval Base). Construction begun in 1849 and was completed in 1872. It is 1700 feet long and has a series of casemates facing in towards the harbour. It terminates in a small fort at the South Ship Channel end. Grade II. (2)

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Source Number : 1
Source :
Source details : OS 1:10000 1970
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Source Number : 2
Source :
Source details : DOE (HHR) Dorset: Weymouth and Portland (Portland) Sep-1978 17.
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Monument Types:

Monument Period Name : Post Medieval
Display Date : Built 1849-72
Monument End Date : 1872
Monument Start Date : 1849
Monument Type : Breakwater, Artillery Fort
Evidence : Structure

Monument Period Name : First World War
Display Date : First World War
Monument End Date : 1918
Monument Start Date : 1914
Monument Type : Heavy Anti Aircraft Battery
Evidence : Documentary Evidence

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Related Records from other datasets:

External Cross Reference Source : National Monuments Record Number
External Cross Reference Number : SY 77 SW 4
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Relationship type : Is referred to by

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Relationship type : General association

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Historic England Research Records

Portland Inner Breakwater