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Cof Cymru: National Historic Assets of Wales · Wales

Dry dock

Amlwch, Isle of Anglesey, Wales

The record

Designation
Listed building, Grade II
Broad class
Maritime
Date of designation
7 August 1974
Locality
Porth Amlwch
Town
Amlwch
Community
Amlwch
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.41557, -4.33207
Cadw reference
5719

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1799 "Ireland." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Located to the NE of the old harbour, and S of the new harbour.

Mid-late C19 dry dock, created by ship-builder Nicholas Treweek in about 1870, by enlarging a small inlet known as Porth Cwch y Brenin; the sail loft to the S is also of that date.

Dry dock created by blasting into natural rock faces to enlarge a narrow inlet at the NE end of the Lower Basin or outer harbour at Porth Amlwch. The N side of the channel was built up with walling as for the other, earlier, stretches of harbour walling

Included as an important component part of the harbour development at Porth Amlwch. The harbour was erected to cater for the increased passage of shipping created by the ongoing period of industrial development at Amlwch, and the dry dock created to meet the demands of the busy shipbuilding industry of the C19.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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