CEFAS25-80 Contract for bathymetric surveys at Sizewell C for the BEEMS programme

Cefas
East of England
Open procedure
6 November 2025 to 5 November 2026

Delivery of 4-6 Multibeam Echosounder (MBES) bathymetric surveys to IHO Special Order within the Greater Sizewell Bay. The work supports ongoing coastal monitoring and regulatory compliance for nuclear power station development, requiring quarterly survey patterns with potential for short-notice adjustments based on construction schedules.

Open the official notice

Awarded value: £500k; As published
Published: 25 July 2025
Awarded: 3 October 2025; Ocean Ecology, Landscope Engineering Limited, SEP Hydrographic Limited and 1 more
Contract length: 12 months; Ends 5 November 2026

What the contract covers

Services contract

Provision of marine bathymetric survey services and geomorphological monitoring for coastal infrastructure and environmental assessment programmes.

Deliver approximately 4–6 Multibeam Echosounder bathymetric surveys to IHO Special Order at a minimum within the Greater Sizewell Bay.
Provide bathymetric data at Sizewell to assess geomorphological changes and support ongoing monitoring of the Sizewell coastline.
Deliver the surveys as a regulatory requirement under the Development Consent Order conditions and the Coastal Processes Monitoring and Mitigation Plan.
Agree exact survey dates with Cefas during pre-survey kick-off meetings, with survey timing potentially changing at short notice because of construction schedules.

Terms and requirements

Contract type: Services contract
Procedure: Open procedure
Initial term: 12 months
Extensions: 12 months + 12 months + 12 months
Longest it can run: 48 months
Contract dates: 6 November 2025 to 5 November 2026
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Yes
Suitable for charities and social enterprises: Yes
Category: Services
CPV codes: 71354500, 63726800, 79311000

Services in this contract

Hydrographic and bathymetric surveysMain service£75k typicalMultibeam bathymetric surveys at Sizewell C for BEEMS

Lifecycle

Published
25 July 2025
Contract awardedto Ocean Ecology, Landscope Engineering Limited, SEP Hydrographic Limited and 1 more
3 October 2025
Contract starts
6 November 2025
Contract ends
5 November 2026

The buyer

Cefas

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The suppliers

Ocean Ecology

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Landscope Engineering Limited

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SEP Hydrographic Limited

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and 1 more

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Cite this contract

Link: https://bidskim.com/tender/324984/cefas25-80-contract-for-bathymetric-surveys-at-sizewell-c-for-the-beems-programm
Buyer reference: CEFAS25-80
Open contracting ID: ocds-h6vhtk-056661
Last checked: 5 November 2026

Cefas. CEFAS25-80 Contract for bathymetric surveys at Sizewell C for the BEEMS programme. Contract award, 25 July 2025. BidSkim, https://bidskim.com/tender/324984/cefas25-80-contract-for-bathymetric-surveys-at-sizewell-c-for-the-beems-programm (accessed 5 November 2026).