Project record

Dunkirk Braek submerged sand-discharge pipeline replacement

Dunkirk Port dredging context showing the Swalinge handling sand beside a quay

Dunkerque-Port; Dunkirk Port dredging and sand-management context, not identified as 2025 Braek pipeline progress

Grand Port Maritime de Dunkerque concluded contract 25 7 001 with Baggerbedrijf de Boer B.V. on 13 January 2025 to remove an existing submerged pipeline and install a new submerged sand-discharge line in front of the Braek dike. The official award notice records EUR 1,720,365 excluding VAT, five electronic bids and a winning variant. The tender required the asset in service no later than 31 May 2025. Public owner and contractor records publish no removal, installation, testing, acceptance, final-value or downstream delivery milestone.

Project signal

Award in France

Current status Baggerbedrijf de Boer holds the EUR 1.720365 million replacement contract concluded on 13 January 2025; the planned 31 May 2025 in-service deadline has passed, while physical completion, acceptance and downstream packages remain unverified Source confidence Confirmed

Location

France / Europe

Segment

Coastal protection and dredged-sand reuse

Status

Baggerbedrijf de Boer holds the EUR 1.720365 million replacement contract concluded on 13 January 2025; the planned 31 May 2025 in-service deadline has passed, while physical completion, acceptance and downstream packages remain unverified / Confirmed

Last checked

5 August 2026

Coverage

Related sectors

Coastal protection and dredged-sand reuse is the primary work classification. Related sectors connect this record to adjacent marine delivery and market coverage.

Subject index

Related subjects

These subject pages bring together related projects, technical articles, reports, and evidence methods.

Project anatomy

Contract scope and delivery roles

Client / authority
Grand Port Maritime de Dunkerque, the state-owned Port of Dunkirk authority
Delivery parties
Baggerbedrijf de Boer B.V. / Dutch Dredging - confirmed holder of contract 25 7 001, Pipeline fabricator, marine plant, diving, survey, testing and other downstream parties - undisclosed
Contract route
Single-lot ordinary works contract under procedure 709d483b-d843-4a64-96a5-4544ece7043b and internal reference 24ANI004. The tender used 70% price and 30% quality, allowed one variant in addition to the mandatory base solution, and required a site visit. The award notice reports five electronic bids, identifies the selected offer as a variant, and records contract conclusion and notification on 13 January 2025.
Execution window
The tender set a seven-month global execution period including up to three months of preparation and required the asset in service no later than 31 May 2025. No revised programme appears in the award result. Public project records available on 5 August 2026 publish no mobilisation, installation, commissioning, acceptance or operational-release milestone.
Works package
Removal of the existing submerged line and installation of a new submerged sand-discharge pipeline in front of the Braek dike. The 2025 notices publish no replacement length, diameter, material, joints, anchors, trenching or burial method, shore connection, diffuser or outlet arrangement, survey basis, test pressure, pumping duty or accepted capacity. Those specifications must not be copied from the 2018 predecessor without current contract evidence.
Marine interfaces
The replacement must connect dredger-supplied sand, offshore or nearshore pipeline handling, seabed positioning, shore and pumping interfaces, tidal access, environmental controls and return-to-service verification on an exposed North Sea frontage. Grand Port Maritime de Dunkerque uses maintenance-dredging sand for coastal protection; public project records allocate none of the 2025 lift, tow, dive, survey, fabrication or commissioning workstreams.
Commercial evidence boundary
The 2025 result is a discrete EUR 1,720,365 excluding-VAT works contract, not a framework ceiling or proof of spend. The selected offer was a variant, but the notice does not publish how it differs from the base solution. The 2018 original-installation award went to the same contractor for EUR 1,097,589 and one bid; that continuity is confirmed procurement history, not proof of sole-source renewal, defect liability, replacement cause or an unchanged supply chain.

Contract and delivery chain

Named roles and open packages

Named appointments are shown against the workstream they cover. Unallocated packages remain open until a project source identifies the responsible party.

2025 replacement works

Remove the existing submerged line and install a new submerged sand-discharge pipeline

Named party
Baggerbedrijf de Boer B.V. / Dutch Dredging
Status
Confirmed
Source position
BOAMP award 25-39677 identifies the contractor, contract 25 7 001, EUR 1,720,365 excluding VAT and 13 January 2025 conclusion date. Source
Procurement competition

Single works lot under 24ANI004

Named party
Grand Port Maritime de Dunkerque and five electronic bidders
Status
Confirmed
Source position
The result records five bids and a winning variant; the tender weighted price at 70% and quality at 30% and allowed one variant alongside the base response. Source
Historical predecessor

2018 installation of a 1.5 km submerged sand-discharge pipeline

Named party
Baggerbedrijf de Boer B.V. / Dutch Dredging
Status
Confirmed
Source position
The official BOAMP dataset records EUR 1,097,589, one bid, no subcontracting declared at award, notification on 17 December 2018 and an intended annual sand-discharge range of 0.5 million to 2 million m3. Source
Fabrication and supply

Pipe, joints, fittings, anchors, valves and shore-interface equipment

Named party
No project-specific supplier publicly identified
Status
Undisclosed
Source position
The 2025 award names the prime but publishes no downstream manufacturer, dimensions, materials, quantities or delivery record.
Marine installation

Recovery, lift, tow, positioning, diving and seabed or shore connection

Named party
No complete marine spread or subcontract chain publicly identified
Status
Not evidenced
Source position
Public owner and contractor records available on 5 August 2026 publish no mobilisation date, vessel name, diving activity, line removal or new-line placement.
Testing and acceptance

As-laid survey, integrity or flow testing, commissioning and owner handover

Named party
Grand Port Maritime de Dunkerque, Dutch Dredging and any specialist verification parties
Status
Not evidenced
Source position
The 31 May 2025 in-service date is a tender requirement. No acceptance certificate, test record, operational release or final account is cited.
Operational use

First verified sand-discharge and Braek nourishment campaign through the replacement line

Named party
Grand Port Maritime de Dunkerque and its dredging operations chain
Status
Not evidenced
Source position
Owner sources establish long-term beneficial use of dredged sand for coastal protection, but do not attribute a dated campaign to the 2025 replacement pipeline.

Project timeline

Material developments

Dated events that changed scope, counterparties, delivery, commissioning or operating status.

Open this project in the Change Log

Award result published after contract conclusion

BOAMP published the EUR 1.720365 million result, five-bid statistic and winning-variant field. Publication does not prove physical progress.

Source

Replacement contract concluded with Baggerbedrijf de Boer

Contract 25 7 001 created a signed removal-and-replacement obligation under procedure 24ANI004, while physical execution and owner acceptance remained separate milestones.

Source

Corrected tender fixed the in-service requirement

The corrected notice set seven months overall, preparation up to three months and service no later than 31 May 2025.

Source

Original 1.5 km pipeline contract was notified

The predecessor award linked the same owner and contractor to a 1.5 km line supporting repeated beneficial use of maintenance-dredging sand.

Source

Evidence gap

What remains unverified

Outstanding evidence

  • Removal date and disposition of the existing submerged line
  • Replacement length, diameter, material, fittings, anchors and shore connection
  • Named fabricator, marine spread, diving, survey and environmental parties
  • Winning variant's technical and commercial difference from the base solution
  • As-laid geometry, hydrographic or dive verification and pressure or flow testing
  • Owner acceptance, return to sand-discharge service and first nourishment campaign
  • Final account, change orders, warranty basis and any defect or delay record

Related records 3

Reporting status

Award, confirmed confidence

Last checked 5 August 2026 across 8 cited sources. The dated timeline above carries the project events.

Last checked 5 August 2026 Cited sources 8

Sources and related records

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Source collections

Project sources 8