---
title: "HMS Alliance Cofferdam Work"
ocid: "ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "THE NATIONAL MUSEUM OF THE ROYAL NAVY"
published: "2024-07-26"
---

# HMS Alliance Cofferdam Work

Buyer: THE NATIONAL MUSEUM OF THE ROYAL NAVY  
Current stage: Award  
OCID: ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92

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## Summary

The National Museum of the Royal Navy (NMRN) awarded a contract for the HMS Alliance Cofferdam Work to MtecH Southern Solutions Ltd. This project involves the removal and storage of stone ballast from the cofferdam beneath the HMS Alliance submarine at the Royal Navy Submarine Museum in Portsmouth. The works also include repairing the drainage system, removing and reinstalling the walkway at the bow end of the cofferdam. The tender process was conducted using an open procedure above the threshold, and the contract period started on 7th February 2022 and ended on 31st March 2022. The total contract value was £84,194. The procurement process has been completed, and the work is fully carried out.

This tender provides a significant opportunity for businesses in the construction industry, particularly those specialising in structural products and water projects. Companies with expertise in special trade construction works, other than roof works, are well-suited to compete for such contracts in future. Engaging in this type of project can help businesses showcase their specialised skills and expand their portfolio, thereby opening doors to additional public procurement opportunities. The active involvement of SMEs like MtecH Southern Solutions Ltd in this project highlights the potential for businesses of a similar scale to secure significant contracts.

## Notice

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.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/524cdf64-c7a3-4957-b176-734117d966f3 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Works |
| Procurement method | Open |
| Procurement method details | Open procedure (above threshold) |
| Tender suitability | Not specified |
| Awardee scale | SME |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 26 Jul 2024 |
| Submission deadline | 7 Jan 2022 |
| Future notice date | Not specified |
| Award date | 27 Jan 2022 |
| Contract period | 7 Feb 2022 - 31 Mar 2022 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £85,000 |
| Lots value | Not specified |
| Awards value | £84,194 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | THE NATIONAL MUSEUM OF THE ROYAL NAVY |
| Locality | PORTSMOUTH |
| Post town | Portsmouth |
| Postcode | PO1 3NH |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ3 Hampshire and Isle of Wight |
| ITL 3 | TLJ31 Portsmouth |
| Local authority | Portsmouth |
| Electoral ward | Charles Dickens |
| Westminster constituency | Portsmouth South |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | MTECH SOUTHERN SOLUTIONS |

## CPV Codes

### Divisions

- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
- 45 - Construction work

### Codes

- 44212000 - Structural products and parts except prefabricated buildings
- 45240000 - Construction work for water projects
- 45262000 - Special trade construction works other than roof works

## Release History

- 26 Jul 2024 at 14:23 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/524cdf64-c7a3-4957-b176-734117d966f3
- 16 Dec 2021 at 14:50 - TenderAmendment - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/ad8f7d2f-ebdf-4afe-9134-a741b4498a52
- 29 Nov 2021 at 09:38 - TenderAmendment - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/ad8f7d2f-ebdf-4afe-9134-a741b4498a52
- 24 Nov 2021 at 17:03 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/ad8f7d2f-ebdf-4afe-9134-a741b4498a52

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/524cdf64-c7a3-4957-b176-734117d966f3
  26th July 2024 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/ad8f7d2f-ebdf-4afe-9134-a741b4498a52
  16th December 2021 - Opportunity notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/d59b6b4c-5730-4cf1-8691-400a4659b25b
  ITT Open Procedure for HMS Alliance Cofferdamn Works v2.1
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/39380501-056c-4091-a2c9-70d6031afda0
  Example of a Service Contract and T&Cs
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/e07539d9-8716-41a9-8e54-aa8bb908ca65
  Annex A- Prepared by Artelia which details the scope of the work required.
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/b3275519-0577-4bfa-9cab-1d1053b57264
  Annex B- Original Drawings for the Concrete Walkway Support Pad
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/2fc13a08-84cf-4e60-982f-e7337ff9a288
  Annex C- Original Drawings of Cofferdam Walkway and Decking Area
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/1b9e4fd8-2217-4fd4-b1b8-90c4b04d3fd9
  Annex D- Original Drawings of Access into HMS Alliance and Surrounding Walkway.
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/d35ccbd5-ae0e-4c6c-8295-739116da086d
  Annex E- Photographs of before the Cofferdam installation in 2010/11 and the construction of it. Including ballast filling.
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/22f402b6-8607-4f31-9519-14bba312ddd7
  Overview of work that has been undertaken with notes on future work that requires to be done.
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/cf213d7d-102a-49e9-bf38-49b0e6049aba
  Statement of Requirement for the work on the Cofferdam, document #1.
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/b60ef5ca-d258-4d54-95a2-0c789d3642ca
  Statement of Requirement for the works on the Cofferdam, document #2
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/90bf40db-981f-4eab-ba78-c3ba4a2ce5a0
  Statement of Requirement for works on cofferdam, document #3
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/3f27a4fb-5bd1-491c-8e2a-658f02f22b86
  Addition to the current ITT and Annexes regarding the relocating of the Memorial Stone presently located at the front of the Cofferdam during works.

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-66b8084b-891d-4ba8-b04e-7a969dba0e92.json.