Project record

NEP offshore pipeline seabed preparation and protection

Participation
Requires review
Participation checked

Pre-lay sand-wave clearance and separate post-lay protection workstreams

Participation source

NEP offshore pipeline works include Hermod R sand-wave clearance, Normand Frontier trenching and Simon Stevin rock installation. The 28 October dredging revision extends clearance in Block 4 and extended Block 5 to around 30 November.

IMWO diagram. NEP vessel-task diagram linking sand-wave clearance, post-lay trenching and rock placement to their required section-level survey records

IMWO original NEP seabed-work package diagram based on operator notices

Location

United Kingdom / Europe

Segment

Marine utilities

Phase

Construction / Confirmed

Last checked

30 October 2026

Coverage

Related sectors

Marine utilities 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
Net Zero North Sea Storage Limited, trading as Northern Endurance Partnership
Delivery parties
Rohde Nielsen operates Hermod R for the dredging activity., Saipem operates Normand Frontier for the stated trenching activity., Jan De Nul operates Simon Stevin for the stated rock-placement activity.
Contract route
NEP has announced the offshore construction campaign and identifies working vessels through operator notices. The cited records concern execution and marine-user notification rather than a current invitation to bid.
Execution window
Hermod R clearance is expected around 30 November 2026. The separate rock programme is intermittently planned to around 30 November, and trenching to approximately 12 January 2027, subject to the notices' weather, operating and programme conditions.
Works package
Pre-lay sand-wave clearance in Block 4 and extended Block 5, followed in relevant route sections by trenching where sufficient burial is achievable or controlled rock/gravel placement where it is not.
Marine interfaces
The three operations use different parts of the pipeline corridor and require vessel clearance. A prepared seabed profile, pipe installation and protection result need their own location-specific survey and handover records.
Commercial evidence boundary
An extended clearance workfront prolongs vessel occupancy and the period for coordinating the receiving installation operation. The published activity endpoints inform vessel and workfront planning by route section.

Evidence gap

What remains unverified

Outstanding evidence

  • Section-by-section cleared-profile survey and handover
  • Revised Hermod R activity endpoint and navigation clearance
  • Rock-placement and trenching completion by route section

Related records 2

Reporting status

Project phase
Construction
Evidence confidence
Confirmed
Last checked
30 October 2026
Cited sources
4

Sources and related records

Project changes Methodology Email a correction Project tracker
Source collections

Project sources 4