Source: https://tendernation.io/opportunities/01a13ce3-5bcc-734d-931b-f8696182a67d/hms-alliance-cofferdam-work awarded GB open procedure # HMS Alliance Cofferdam Work [The National Museum of the Royal Navy](https://tendernation.io/buyers/the-national-museum-of-the-royal-navy) Estimated value £85,000 Published 24 Nov 2021 Deadline Closed 7 Jan 2022 ## Who can bid - Small contract value Valued under £135,018 including VAT, the lowest Procurement Act threshold for goods and services. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. ## About this tender 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. ## CPV classification Structural products and parts except prefabricated buildings Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/66b8084b-891d-4ba8-b04e-7a969dba0e92) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile The National Museum of the Royal Navy: past awards and live tenders](https://tendernation.io/buyers/the-national-museum-of-the-royal-navy) [Sector More Construction materials & structures tenders](https://tendernation.io/sectors/construction-materials) ## More tenders like this [Drinking-water piping – Lieferung von Material für die Trinkwasserversorgung (PE-HD-Rohr) für die Trinkwasserversorgung der KOOPERATION WASSER. · Trinkwasserverband Stader Land · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-0b9d-724a-b3ac-6a1b5383af17/germany-drinking-water-piping-lieferung-von-material-fur-die-trinkwasservers) [Construction materials – Fornecimento de Materiais de Construção Civil para o ano de 2027 · Município de Lagoa (Açores) · 27 days left · 14 Nov 2026](https://tendernation.io/opportunities/01a15183-1411-7299-9481-e5274c3efd59/portugal-construction-materials-fornecimento-de-materiais-de-construcao-civi) [Modular and portable buildings – Fourniture, livraison et installation de 5 habitations légères de loisirs (HLL) au camping de la Colombière a Pesmes · Communauté de Communes Val de Gray · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-5cdd-730e-a2d6-1022e299032b/france-modular-and-portable-buildings-fourniture-livraison-et-installation) [Smiths' wares – Fournitures d'atelier : Serrurerie - Quincaillerie · Nievre Habitat · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-c593-71cf-99c0-59c343efbbd0/france-smiths-wares-fournitures-datelier-serrurerie-quincaillerie) [Building materials – Dostawy materiałów ogniotrwałych formowanych · Sieć Badawcza Łukasiewicz-Instytut Metali Nieżelaznych · 18 days left · 6 Nov 2026](https://tendernation.io/opportunities/01a15183-4d1a-7143-ae91-f1f0c3bdd6a9/poland-building-materials-dostawy-materialow-ogniotrwalych-formowanych) [Building materials – Fourniture de matériels et matériaux · Ville de Saint-Just Saint-Rambert · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-1461-73f3-8616-e84751ddcbff/france-building-materials-fourniture-de-materiels-et-materiaux)