HMS Alliance Cofferdam Work
The National Museum Of The Royal Navy
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Key details
Procurement
- 44212000 Structural products and parts except prefabricated buildings
- 45240000 Construction work for water projects
- 45262000 Special trade construction works other than roof works
What happened
The National Museum Of The Royal Navy awarded this contract to MtecH Southern Solutions Ltd worth £84,194 on 27 Jan 2022. The contract runs until 31 Mar 2022.
Description
The NMRN are seeking works to the cofferdam which is beneath the submarine HMS Alliance. The cofferdam requires the removal of the stone ballast (and storage) to access to repair the drainage, as well as removal of the walkway at the bow end of the cofferdam.
The walkway will require re-installation as part of the works itself after the drainage of the cofferdam has been repaired and the ballast removed reinstated. This is detailed in the Annex's of this document.
The work will be carried out at the Royal Navy Submarine Museum, and the work carried out will often be with the museum itself open to the public. However the NMRN understands that some work will require the closure of the site or the submarine for the work to be carried out.
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External ID: cf-ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92 • Added 3 October 2026