Location
Netherlands / Europe
Project record
Kustlijnzorg North Holland and Texel nourishment (31205035)
Rijkswaterstaat awarded Boskalis Nederland B.V. contract 31205035 for four nourishment work packages and one marine-object removal package along North Holland and Texel. The issued design set allocates 9.055 million m3 in situ: 1.7 million m3 at Julianadorp foreshore, 380,000 m3 at Den Helder beach, 5.5 million m3 at the Den Helder tidal-channel wall and 1.475 million m3 at Texel Midden beach. A fifth package removes an approximately 83.5 m long, 0.81 m diameter sinker pipeline near Julianadorp. Rijkswaterstaat has publicly announced the Den Helder and pipe-removal work windows, but has not published measured production, vessel allocation or acceptance.
Segment
Beach and foreshore nourishment
Status
Boskalis signed the EUR 26.098 million contract on 12 May 2026; Rijkswaterstaat announced Den Helder tidal-channel nourishment from 14 July to mid-October and Julianadorp sinker-pipe removal from 20 July, while measured production and acceptance remain unpublished / Confirmed
Last checked
7 August 2026
Coverage
Related sectors
Beach and foreshore nourishment 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
- Rijkswaterstaat Programma's, Projecten en Onderhoud
- Delivery parties
- Boskalis Nederland B.V. - signed engineering and execution contractor, Dredging vessels, survey teams, sand-source and pipeline-removal spread - not identified in the reviewed official record, Lower-tier suppliers and subcontractors - no subcontracting was declared in the award notice, but execution appointments remain unverified
- Contract route
- Rijkswaterstaat used an open European procedure for an Engineering and Construct contract under the Dutch UAV 2012 model. Seven bids were received. TenderNed records Boskalis Nederland B.V. as winner at EUR 26,098,000 excluding VAT and a contract signature date of 12 May 2026.
- Execution window
- The award notice gives an estimated execution period from 14 May 2026 to 15 December 2027. Rijkswaterstaat separately announced Den Helder tidal-channel works from 14 July to mid-October 2026 and Julianadorp sinker-pipe removal from 20 July. These owner windows establish planned or announced activity, not completed quantities or final acceptance.
- Works package
- WP1 Julianadorp foreshore: 1.7 million m3 in situ over about 4.6 km. WP2 Den Helder beach: 380,000 m3 over about 1.65 km. WP3 Den Helder tidal-channel wall: 5.5 million m3 over about 2.6 km. WP4 Texel Midden beach: 1.475 million m3 over about 6.8 km. WP5: remove an approximately 83.5 m long, 0.81 m diameter sinker pipeline or object lying around 4.95 to 6.58 m below NAP near Julianadorp. The contractor is responsible for execution design within the specified performance envelope.
- Marine interfaces
- The programme combines offshore borrow-area production, TSHD transport, rainbowing or bottom discharge, beach and foreshore placement, hydrographic and geodetic survey, coastal morphology, environmental controls, navigation safety and removal of a submerged pipeline. Den Helder's nearshore tidal channel creates a distinct placement and stability interface, while Texel and Julianadorp require separate beach or foreshore logistics.
- Commercial evidence boundary
- EUR 26.098 million is the signed contract value reported by TenderNed. The final design indicates 9.055 million m3 in situ across four nourishment packages, but public sources do not disclose package prices, sand-source economics, vessel day rates, variations, certified production, payments or final account. The fifth work package adds removal risk that should not be valued by dividing the contract price by total nourishment volume.
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.
Legal award
31205035
- Named party
- Boskalis Nederland B.V.
- Status
- Confirmed
- Source position
- TenderNed records a EUR 26.098 million contract signed on 12 May 2026 after seven bids. Source
Designed nourishment scope
WP1-WP4
- Named party
- Rijkswaterstaat and Boskalis Nederland B.V.
- Status
- Confirmed
- Source position
- Final design documents indicate 9.055 million m3 in situ across Julianadorp, Den Helder and Texel Midden. Source
Current announced works
Den Helder tidal-channel wall and Julianadorp pipe removal
- Named party
- Rijkswaterstaat and Boskalis
- Status
- Confirmed
- Source position
- Rijkswaterstaat announced Den Helder works from 14 July to mid-October 2026 and pipe removal from 20 July, without publishing measured production. Source
Execution chain and accepted progress
Marine plant, lower tiers, production and acceptance
- Named party
- Not publicly identified
- Status
- Not evidenced
- Source position
- The reviewed official record does not identify assigned vessels, downstream contractors, certified quantities or acceptance certificates.
Project timeline
Material developments
Dated events that changed scope, counterparties, delivery, commissioning or operating status.
Open this project in the Change LogRijkswaterstaat announced the Den Helder execution window
The owner moved the 5.5 million m3 tidal-channel package from signed contract to publicly announced field execution, while leaving measured production and vessel identity open.
SourceBoskalis signed contract 31205035
The EUR 26.098 million award fixed the legal main contractor and 2026-2027 delivery period for the North Holland and Texel package family.
SourceEvidence gap
What remains unverified
Outstanding evidence
- Named TSHD, support craft and survey spread
- Borrow area, sand quality and environmental conditions
- Hydrographic baseline and accepted in situ measurement method
- Den Helder daily or weekly production and mid-October completion
- Julianadorp sinker-pipe lifting, transport and disposal route
- Julianadorp foreshore, Den Helder beach and Texel Midden mobilisation
- Named lower-tier survey, pipeline, environmental and marine-service parties
- Variations, extensions, certified quantities and package acceptance
Sources and related records
Read featured analysis Methodology Submit a correction Project tracker
Source collections
Project sources 5
- Contract 31205035 award notice 428827 TenderNed / Rijkswaterstaat, Published 3 June 2026; contract signed 12 May 2026
- Contract 31205035 final bestek and work-package scope TenderNed / Rijkswaterstaat, Tender documents published 2025-2026; reviewed 7 August 2026
- Den Helder coastal works from 14 July 2026 Rijkswaterstaat, 7 July 2026
- Current 2026 coast-maintenance schedule Rijkswaterstaat, Current page reviewed 7 August 2026
- Kustlijnzorg 2024-2027 procurement factsheet Rijkswaterstaat, March 2025