Contract awardedMooring buoys

Defence Marine Services – Supply and Maintenance of Authority Moorings, Markers and Targets

Ministry of Defence
Selective procedure
1 October 2025 to 30 September 2033

Maintenance of moorings, target moorings, and navigation marks across UK, Gibraltar, and Cyprus, including the replacement of legacy assets with telemetry buoys. The contract involves the design, procurement, and installation of new moorings, plus the storage and supply of components for onward transport to Ascension Island and the Falkland Islands. A Contractor Owned Contractor Operated (COCO) agreement for an authority-owned vessel is included, requiring all vessels to be UK flagged and certified.

Open the official notice

Awarded value: £182m; As published
Published: 4 July 2022
Awarded: 23 May 2025; Briggs Marine Contractors Limited
Contract length: 96 months; Ends 30 September 2033

What the contract covers

Services contract

Provision of marine engineering, mooring maintenance, and navigation mark supply services for coastal and international maritime infrastructure assets.

Maintenance of Authority-owned moorings, target moorings and navigation marks at locations around the UK Coast, including Gibraltar and Cyprus
Replacement of moorings and navigation marks with telemetry buoys
Sourcing, storage and supply of moorings and navigation mark components
Delivery of components to a UK-based nominated point of departure to enable the Authority to transport them to Ascension Island and the Falkland Islands

Terms and requirements

Contract type: Services contract
Procedure: Selective procedure
Initial term: 96 months
Contract dates: 1 October 2025 to 30 September 2033
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Not stated
Category: Services
CPV codes: 98360000

Services in this contract

Aids to navigation, buoys and mooringsMain service£44k typicalMaintenance and replacement of moorings and navigation marks with telemetry buoys

Lifecycle

Published
4 July 2022
Contract awardedto Briggs Marine Contractors Limited
23 May 2025
Contract starts
1 October 2025
Contract ends
30 September 2033

The buyer

Ministry of Defence

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The supplier

Briggs Marine Contractors Limited

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Main buyers

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Cite this contract

Link: https://bidskim.com/tender/51338/defence-marine-services-supply-and-maintenance-of-authority-moorings-markers-and
Buyer reference: tender_302158/1493434
Open contracting ID: ocds-b5fd17-292894f5-70f8-4785-9931-a3021a60d7e8
Last checked: 5 November 2026

Ministry of Defence. Defence Marine Services – Supply and Maintenance of Authority Moorings, Markers and Targets. Contract award, 4 July 2022. BidSkim, https://bidskim.com/tender/51338/defence-marine-services-supply-and-maintenance-of-authority-moorings-markers-and (accessed 5 November 2026).