CEFAS24-145 Contract for Bathymetry Surveys at Sizewell C

Cefas
East of England
Open procedure
7 March 2025 to 31 December 2025

Delivery of two multibeam echosounder bathymetric surveys in Greater Sizewell Bay to IHO Special Order standards. The work includes nearshore transects and radar calibration corridors, requiring spring tide scheduling and submission of detailed line plans for review. The project involves a maximum survey extent of 2 km2, with specific requirements for crossline verification and attendance at a marine induction meeting with the local harbour master.

Open the official notice

Awarded value: £48k; As published
Published: 7 March 2025
Awarded: 5 March 2025; Spectrum Geosurvey Limited
Contract length: 10 months; Ends 31 December 2025

What the contract covers

Costed per day

Provision of specialist marine bathymetric survey services using multibeam echosounder technology for coastal geomorphological monitoring and data analysis.

Two Multibeam Echosounder (MBES) bathymetric surveys to IHO Special Order (at a minimum) within the Greater Sizewell Bay (GSB)
Nearshore transects to be undertaken to assess the geomorphological changes shown by two longshore bars
Three further East to West Corridors ('Radar Calibration Corridors') included in the scope for Multibeam survey
Supplemented by a series of crosslines for verifying and evaluating the accuracy and reliability of surveyed depths and plotted locations in April

Terms and requirements

Contract type: Costed per day
Procedure: Open procedure
Initial term: 10 months
Contract dates: 7 March 2025 to 31 December 2025
Certifications asked for: None stated
Suitable for SMEs: Yes
Category: Services
CPV codes: 79311000

Services in this contract

Hydrographic and bathymetric surveysMain service£75k typicalMultibeam bathymetric surveys of Sizewell Bay

Lifecycle

Published
7 March 2025
Contract awardedto Spectrum Geosurvey Limited
5 March 2025
Contract starts
7 March 2025
Contract ends
31 December 2025

The buyer

Cefas

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The supplier

Spectrum Geosurvey Limited

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Cite this contract

Link: https://bidskim.com/tender/95788/cefas24-145-contract-for-bathymetry-surveys-at-sizewell-c
Buyer reference: CF-0469200D8d000003VQwdEAG
Open contracting ID: ocds-b5fd17-4d0fc7bd-6249-44e2-a8a7-ead1a7a3c646
Last checked: 5 November 2026

Cefas. CEFAS24-145 Contract for Bathymetry Surveys at Sizewell C. Contract award, 7 March 2025. BidSkim, https://bidskim.com/tender/95788/cefas24-145-contract-for-bathymetry-surveys-at-sizewell-c (accessed 5 November 2026).