Source: https://tendernation.io/opportunities/01a13d20-8e5a-7232-8f92-3cc571b2586f/supply-chain-notice-wat0155-02-berth-5b3-upgrade-detailed-design pending GB open procedure Suitable for SMEs # Supply Chain Notice: WAT0155-02 - Berth 5B3 Upgrade - Detailed Design [Ministry of Defence](https://tendernation.io/buyers/ministry-of-defence) Estimated value £750,000 Published 26 Feb 2026 Deadline Rolling deadline ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender This project involves developing the finalised Basis of Design into a full detailed design and construction ready package for the refurbishment of Berth 5B3 within Portsmouth Naval Base. The upgrade will provide enhanced operational capacity of the non-tidal basin at Portsmouth Naval Base. The design development progresses the scheme from RIBA Stage 2 to RIBA Stage 4, covering all civil and structural elements required for delivery. The scope includes strengthening and adapting the quay structures and access road to reinstate full operational capability at 5B3. As part of the qualification process we will be looking for evidence of; (Please refer to section 3.27 of the selection questionnaire) - Experience delivering RIBA Stage 2-4 design for major civil or maritime infrastructure projects. - Capability in quay wall, jetty, or berth structural design, including rehabilitation or strengthening of historic or mixed material waterfront structures. - Experience working within operational port, dockyard or naval environments, including managing constraints associated with security, access, and vessel movements. - Experience designing foundations and structural elements involving heritage or legacy construction, such as timber piles, stone walls, or hybrid masonry concrete structures. - Capability in producing construction ready design packages, including fully coordinated civil, structural, and access/roadway design. - Evidence of successfully managing stakeholder interfaces, particularly with infrastructure owners, defence clients, or complex multi disciplinary teams. - Experience delivering works where existing loading restrictions or degraded maritime structures require enhanced investigation, monitoring, or temporary works considerations. Additional information: If you are interested in this opportunity, please contact to express interest quoting EOI- WAT0155-02 - 5B3 Detailed Design and return a completed Supplier Questionnaire (SQ) and Non-Disclosure Agreement (NDA) attached to this notice. Please confirm you are registered with EU Supply when expressing interest in this opportunity and provide the exact company entity as registered. Any expression of interest that does not include the returned documentation will be rejected. KBS publish opportunities via the EU Supply Platform. As a supplier, you will need to have a registered account on EU Supply to be able to access opportunities, download documents and submit responses to Tenders. If you are not already registered, please go to UK (eu-supply.com) and click 'New Supplier Registration' and follow the simple and free registering process. Read full description ## CPV classification Construction consultancy services Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/af51be87-af68-49a6-860c-6368181b436b) 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. 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