Offshore Services
From landfalls and trenching to seabed preparation and rock installation, we work with operational accuracy to safely bring power ashore.
Offshore Services require great expertise and advanced equipment
As an international dredging and marine contractor, Rohde Nielsen has both. With a large fleet of specialised vessels and equipment for marine construction, Rohde Nielsen is particularly well-equipped to provide advanced Offshore Services.
We operate a unique fleet tailored for offshore trenching, and other seabed preparation and reinstatement works. We successfully carry out a variety of offshore projects with our unique combination of versatile offshore vessels, modern techniques, and advanced equipment.
Featured Offshore projects
Vesterhav offshore wind farms
Explore Project
Purpose:
Installation of protective layer of amour rock on the foundations for the offshore wind farms. …
- Location:
- Vesterhav (DEN)
- Scope:
- 69,000 ton of rocks
- Client:
- Asso Subsea Limited
- Year:
- 2023
Ostsee Anbindungs-Leitung Project
Explore Project
Purpose:
Construction of an offshore 48” diameter pipeline…
- Location:
- Baltic Sea (GER)
- Scope:
- 2,000,000m3
- Client:
- Gascade Gastransport GmbH
- Year:
- 2023-2024
Lillebælt Old Bridge
Explore Project
Purpose:
Installation of 2,100 tons of rock intended for erosion protection…
- Location:
- Lillebælt (DEN)
- Scope:
- 2,100 ton of rocks
- Client:
- BaneDanmark Infrastruktur
- Year:
- 2023
Hanö
Explore Project
Purpose:
Dredging a 6 km long trench, at water depths differing from -3m to -30m….
- Location:
- Hanö, Sweden
- Scope:
- 3 x 6 km pipes and 6 km cable
- Client:
- NCC Sweden AB
- Year:
- 2022
Baltic Pipe
Explore Project
Purpose:
Strengthening the European internal energy market….
- Location:
- Denmark and Poland
- Scope:
- 1,000,000 m3, 1,000 stones
- Client:
- Saipem Ltd
- Year:
- 2021-2022
NKT – Noss Head, Scotland
Explore Project
Purpose:
Secure a new power cable by installing a rock berm on top of the cable. …
- Location:
- Near Noss Head, Scotland (GBR)
- Scope:
- 22,000 tons of rock
- Client:
- NKT
- Year:
- 2022
Tolmount Pipeline
Explore Project
Purpose:
Clearance of a total of 3,000 boulders has been cleared from the pipeline route…
- Location:
- Tolmount, United Kingdom
- Scope:
- 3,000 Boulders, 50,000 m3 Clay
- Client:
- Saipem Ltd
- Year:
- 2019-2020
Horns Rev 3
Explore Project
Purpose:
Various remediation campaigns at a wind turbine in Horns Rev 3…
- Location:
- Esbjerg, Denmark
- Scope:
- 110,000 m3, 7,000t Rock
- Client:
- Vattenfall Vindkraft Horns Rev 3 P/S
- Year:
- 2019-2020
Borsele Offshore Wind Farm
Explore Project
Purpose:
Dredging of upper siltated sand, expansion of rock bed area and installation of additional rock…
- Location:
- Esbjerg, Denmark
- Scope:
- 25,000 dredged, 40,000 rock installed
- Client:
- Siemens Gamesa
- Year:
- 2019-2020
Cobra Cable
Explore Project
Purpose:
Trench dredging and backfilling works…
- Location:
- Eemshaven, Netherland
- Scope:
- 4,656,000 m3 or 2,600,000 m3 in 5 sections
- Client:
- Prysmian Power Link, TenneT and Energinet
- Year:
- 2018-2019
Cluster West Adlergrund
Explore Project
Purpose:
Installation of 4 export cables totaling 300 km in length from offshore wind farms…
- Location:
- Lubmin, Germany
- Scope:
- 330,000 m3
- Client:
- Prysmian & 50 Hertz
- Year:
- 2017-2019
Offshore Thyborøn
Explore Project
Purpose:
installation of 2,500 GSCs (geotextile sand containers) for offshore wind turbines….
- Location:
- Nissum Bredning
- Scope:
- 2,500 GSCs
- Client:
- Siemens Gamesa Renewable Energy
- Year:
- 2018
Anchorsholme Outfall
Explore Project
Purpose:
Pre-Pipelay trench dredging works required for the 3.75km Outfall pipe….
- Location:
- Anchorsholme, United Kingdom
- Scope:
- 350,000 m3
- Client:
- J Murphy & Sons Ltd
- Year:
- 2017
Nissum Bredning
Explore Project
Purpose:
Floatation channels for offshore installation barges…
- Location:
- Nissum Bredning
- Scope:
- 220,000 m3
- Client:
- Per Aarsleff A/S
- Year:
- 2017
NorNed Lowering & Remidial Burial
Explore Project
Purpose:
NorNed Lowering and Remedial Burial using Mass Flow Excavation…
- Location:
- The Netherlands
- Scope:
- 17 km
- Client:
- TenneT TSO B.V.
- Year:
- 2016
York Development Pipeline
Explore Project
Purpose:
Trench dredging, pre-sweep and backfilling at the East Yorkshire Coast…
- Location:
- East Yorkshire Coast (UK)
- Scope:
- 7 km of trench
- Client:
- Saipem Ltd
- Year:
- 2012
If it wasn’t complex, it wouldn’t be fun
We offer various services for the offshore sector, including landfall dredging, trenching and backfilling, cofferdam installation, pipe pull, subsea gravel and rock installation, ROV inspection, and seabed preparation works. We also specialise in boulder removal when clearing corridors for cables, pipelines, and spudcan areas for jack-up installation vessels. We equip our peel grabs with video cameras and lights to assist the operator visually.
Our wire-grabs are equipped with a separate positioning antenna, laser measurement, and a USBL transponder. This ensures the most accurate positioning of our equipment during operations.
But most importantly, we have the solutions, know-how, and the right mindset to solve even the most challenging project. We always deliver within schedule, budget, and in compliance with environmental conditions and safety standards.
Featured projects worldwide
Bringing power ashore with an advanced fleet
We successfully carry out offshore projects with our versatile vessels equipped with the latest technology. Our backhoes, grab dredgers, trailing suction hopper dredgers, and multi-purpose vessels can achieve results of the highest precision and quality.
With dynamic positioning, operational accuracy, detailed tracking, and thorough surveying, Rohde Nielsen’s state-of-the-art fleet is ready for every complex offshore project.
Explore the fleetYour preferred marine contractor
We strive to retain our position as one of the largest dredging and marine contractors in Europe and to be a preferred partner in projects worldwide.
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Creating, preserving, and restoring coastlines and beaches to protect life along the coast.
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Learn moreCapital and Maintenance Dredging
We develop and maintain waterways globally to support the economic growth and seaborne trade of tomorrow.
Learn moreOffshore Services
From landfalls and trenching to seabed preparation and rock installation, we work with operational accuracy to safely bring power ashore.
Learn morePort Development
Contributing to the development and extension of ports and navigation channels globally.
Learn moreTalk to us about your Offshore project
If you would like to know more about us and our Offshore Services, you know where to find us. At sea, Safeguarding Tomorrow.
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