---
title: "708422450 - Provision of Underwater Engineering Services Lot 2 CF CN"
ocid: "ocds-b5fd17-3e3c670c-99a9-4ba5-ae65-ee9bea6ed89a"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-3e3c670c-99a9-4ba5-ae65-ee9bea6ed89a"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-3e3c670c-99a9-4ba5-ae65-ee9bea6ed89a.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-3e3c670c-99a9-4ba5-ae65-ee9bea6ed89a.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "Ministry of Defence"
published: "2026-09-17"
---

# 708422450 - Provision of Underwater Engineering Services Lot 2 CF CN

Buyer: Ministry of Defence  
Current stage: Award  
OCID: ocds-b5fd17-3e3c670c-99a9-4ba5-ae65-ee9bea6ed89a

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## Summary

The Ministry of Defence procured underwater engineering services for Royal Navy and Royal Fleet Auxiliary vessels. The requirement covers inspections, repairs, husbandry and maintenance at or below the waterline, supporting safe, compliant and efficient vessel operation and reducing the need for disruptive dry docking. The work is intended to maximise the availability of Royal Navy vessels. This is a specialist engineering and vessel repair service, including technical and maritime safety inspections and diving services. Delivery is associated with the Ministry of Defence site at Abbey Wood in Bristol and the South West of England. The main commercial focus is an underwater engineering capability for naval and auxiliary vessels rather than general marine maintenance.

The procurement has been awarded following a selective competitive procedure with negotiation for an above-threshold contract. The tender closed on 5 August 2026, and the contract was awarded to SeaTec UK Ltd on 6 August 2026. The awarded value is £65,000,000, with the contract running from 6 August 2026 to 6 August 2031. The tender was classified primarily as vessel repair services, with associated engineering support, technical inspection, maritime safety inspection and diving services. The opportunity was assessed as unsuitable for small and medium-sized enterprises and voluntary, community or social enterprises. The recorded award is active and relates to a single lot covering the underwater engineering requirement.

This award indicates sustained Ministry of Defence demand for an integrated underwater engineering capability supporting operational naval vessels. A credible competitor for comparable future work would need practical expertise in below-waterline inspection, repair, husbandry and maintenance, backed by engineering support and maritime safety inspection capability. Diving competence and the ability to work safely around Royal Navy and Royal Fleet Auxiliary vessels would be central. Suppliers would also need the organisational capacity to deliver a substantial, long-term service rather than isolated diving or repair jobs, and to support vessel availability while avoiding unnecessary dry docking. The procurement route shows that experience presenting a negotiated technical and commercial solution for a complex, above-threshold defence requirement is relevant. The stated suitability assessment points towards established, larger-scale suppliers rather than SMEs or VCSEs.

## Notice

The Underwater Engineering (UWE) capability is the provision of inspections, repairs, husbandry, and maintenance at or below the waterline, ensuring the compliant, efficient, and safe operation of RN and RFA vessels, while avoiding expensive and disruptive dry dockings, which as a result supports the strategic intent to maximise availability of RN vessels.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/3de95cde-cc02-4deb-b21b-d3a0c9586173 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Competitive procedure with negotiation (above threshold) |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 17 Sep 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 6 Aug 2026 |
| Contract period | 6 Aug 2026 - 6 Aug 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £65,000,000 |
| Lots value | Not specified |
| Awards value | £65,000,000 |
| 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 | Ministry of Defence |
| Locality | BRISTOL |
| Postcode area | Bristol |
| Postcode | BS34 8JH |
| Country | England |
| ITL 1 | TLK South West (England) |
| ITL 2 | TLK5 West of England |
| ITL 3 | TLK52 Bath & North East Somerset and South Gloucestershire |
| Local authority | South Gloucestershire |
| Electoral ward | Stoke Park & Cheswick |
| Westminster constituency | Filton and Bradley Stoke |
| Delivery location | TLK South West (England) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Sea Tec Uk Limited |

## CPV Codes

### Divisions

- 50 - Repair and maintenance services
- 71 - Architectural, construction, engineering and inspection services
- 98 - Other community, social and personal services

### Codes

- 50241100 - Vessel repair services
- 71336000 - Engineering support services
- 71631400 - Technical inspection services of engineering structures
- 71631420 - Maritime safety inspection services
- 98363000 - Diving services

## Release History

- 17 Sep 2026 at 12:23 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/3de95cde-cc02-4deb-b21b-d3a0c9586173

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/3de95cde-cc02-4deb-b21b-d3a0c9586173
  17th September 2026 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/45834a18-7417-4cdb-99c7-e04e3dcd0512
  n/a
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/36e30b01-0399-4abf-b746-f6690ac8ce7a
  n/a

## Provenance

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