---
title: "Defence Marine Services - Support to In-Port Marine Services and Delivery of a Vessel Replacement Programme AC"
ocid: "ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "MINISTRY OF DEFENCE"
published: "2025-06-10"
---

# Defence Marine Services - Support to In-Port Marine Services and Delivery of a Vessel Replacement Programme AC

Buyer: MINISTRY OF DEFENCE  
Current stage: Award  
OCID: ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae

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## Summary

The Ministry of Defence, based in Portsmouth, has successfully completed the procurement process for the "Defence Marine Services - Support to In-Port Marine Services and Delivery of a Vessel Replacement Programme AC" contract. This contract, valued at £878 million, falls under the Marine Services category (CPV: 98360000) and operates under a Government Owned Contractor Operated (GOCO) agreement. The services will be delivered across various UK naval bases, including Clyde, Devonport, and Portsmouth, starting from April 25, 2025, and concluding on September 30, 2035. Awarded to Serco Limited on June 10, 2025, the procurement was conducted through a direct method as a single tender action below the threshold.

This contract offers significant opportunities for large maritime and defence service providers, specifically those specialising in vessel operation and maintenance. Companies adept at delivering maritime services such as towage, dockyard pollution response, and military training support, alongside capabilities in vessel replacement and building to UK Flag and Class classification standards, are well-suited to compete in similar future tenders. Through such engagements, businesses can expand their operations and demonstrate their expertise in delivering critical national defence infrastructure services.

## Notice

Award of Contract under DMS-NG for the Defence Marine Services - Support to In-Port Marine Services and Delivery of a Vessel Replacement Programme contract. The contract encompasses two elements: the support to In-Port Marine Services; and delivery of a vessel replacement programme. The duration of the contract is 120 months. The services will be provided principally across UK HM Naval Bases at the Clyde, Devonport, Portsmouth, as well as Glen Mallan, Loch Ewe, Loch Striven, and Campbeltown, and other areas in UK waters. The operation and maintenance of UK Ministry of Defence (MoD) owned vessels used for the provision of the services, under a Government Owned Contractor Operated (GOCO) agreement, ensuring the availability of In-Port Marine Services. The specification for the services includes the following: - Towage services to entitled vessels. - HM Dockyard movements covered by duty & standby service. - Passenger transportation- Stores & liquid transportation. - Transport & store munitions.- Waste services alongside, at anchor / mooring buoy. - Tiers 1 & 2 Dockyard pollution response. - Support military training, exercises, trials and operations (SMTE) - Support to Emergencies. - Additional maritime support. The delivery of a vessel replacement programme to the Royal Navy, for the procurement and introduction into service of Commercial off the Shelf (COTS) vessels on behalf of the UK MoD. Vessels to be built and maintained to UK Flag and Class classification standards and introduced into service in accordance with an agreed Integrated Test Evaluation and Acceptance Plan.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/9db25e1f-ed8b-42f6-ac3f-1034e94c4d43 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Single tender action (below threshold) |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 10 Jun 2025 |
| Submission deadline | 14 Oct 2024 |
| Future notice date | Not specified |
| Award date | 24 Apr 2025 |
| Contract period | 24 Apr 2025 - 30 Sep 2035 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £878,000,000 |
| Lots value | Not specified |
| Awards value | £878,000,000 |
| 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 | PORTSMOUTH |
| Post town | Portsmouth |
| Postcode | PO1 3LU |
| 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 | TLJ South East (England) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | SERCO |

## CPV Codes

### Divisions

- 98 - Other community, social and personal services

### Codes

- 98360000 - Marine services

## Release History

- 10 Jun 2025 at 09:42 - AwardUpdate - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/9db25e1f-ed8b-42f6-ac3f-1034e94c4d43
- 10 Jun 2025 at 09:39 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/9db25e1f-ed8b-42f6-ac3f-1034e94c4d43

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/9db25e1f-ed8b-42f6-ac3f-1034e94c4d43
  10th June 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/4457fa55-5c14-4477-9e59-68b9f18b6c97
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/1a5d0ebd-20d1-4f5d-9067-b78cbd20cf4b
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/dc1dbc5f-0df3-404c-af33-84fbd245e032
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/00c63003-914e-48f6-a59f-d75e38e8253e
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/30d46201-5512-4c9c-a790-0442898a25a1
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/4494df7c-b2a4-4f48-8b29-4e93839a4b75
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/cc91fbd3-40bf-479d-8278-03dd3bd8449f
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/631d8ec0-ebbe-4464-9031-186d2f0586b7
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/a8de3673-d238-4629-a361-6e88dfd6d3de
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/8244a724-7510-46e8-9335-10a53f3679a0
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/c525a5c6-60d1-421a-9918-9f1924eb9a95
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/bc3d53f8-8102-48b0-b572-3ca0b2b06415
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/0f2de5fd-c2e7-45c4-ab14-3ccfa3fd4efc
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/0b40dd46-7471-49dd-944f-a9ad57a0436b
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/12cc2ca8-2960-492b-8bd9-edbb914e7a8c
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/fb6abd03-3cec-4b0b-9c4c-8d0cca1972fe
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/325ea088-7f85-48bf-9985-5b9e8034dc9e
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/0224b8ee-bf97-4dea-a303-9d6781ce527c
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/a7c83fce-5af1-4336-a3fa-d91127c34998
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/7c2ccf64-26ba-4f8f-b1c2-1be2d8b6e10a
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/e7b2f9f0-7c4e-4f25-81e3-52541fbf9396
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/f96c85d4-c275-4a19-aa98-c4b7dc154361
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/688b9dec-a939-4c20-8b32-9cd84cd2f1db
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/0aa5cf2b-e067-48e6-bb38-daf1f9cfef2c
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/2ad589ac-5ad7-461a-be61-c449b07bc1d6
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/107f9107-152e-4498-85c9-38e7fb59b598
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/f8403cea-a9e9-4acf-9fd4-c8b3ff2d4c4d
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/f3d78026-2304-424c-bdef-699a62e3dd05
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/b3abc761-ec54-4011-a260-75c018148910
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- https://www.contractsfinder.service.gov.uk/Notice/Attachment/5cec09e1-4e1e-4b14-8011-3a0c34b026fe
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- https://contracts.mod.uk/esop/ect/filesharing/flist/6916758/0/foldersFilesList.si?reset=true&isOnModification=false&_ncp=1748862743182.133131-4#fh
  Contract Main Body
- https://contracts.mod.uk/esop/ect/filesharing/flist/6916758/11535852/foldersFilesList.si
  Contract Schedules

## 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-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-93126d46-feac-498b-a593-6d4d1a81f1ae.json.