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Inspections, Maintenance & Repair (IMR)

CWind has decades of experience delivering Subsea & Topside Inspections and Offshore Maintenance and Repair (IMR), utilising innovative technology, world-beating people and proven procedures, delivered through one interface

Since 2010 our experienced, world-class teams have prepared and executed both planned and unplanned offshore maintenance works at 12 wind farm sites. Our speed and performance speaks for itself, and is reflected by our customers continued loyalty in our range of offshore services.

CWind offers a bespoke package to suit all of our clients’ needs, ensuring they get a holistic service from start to finish. We provides support for all manner of offshore maintenance issues, including corrosion protection, subsea survey and inspection, preventative maintenance, retrofits and snagging, as well as scheduled repairs and cleaning of offshore structures. Our teams have decades’ of experience in delivering quality – so you know what to expect!

Diverless Subsea Technology

State-of-the-art assets which allow for subsea inspections to depths of up to 4,000 metres

24/7, 365 Day Service

Our experts work tirelessly to provide peace of mind for your project

Pre-emptive & Reactive Repairs

We provide a range of maintenance services to ensure asset integrity for all customers

Save Time & Money on Projects

By utilising best-in-class staff and technology, we can complete your project faster, keeping your budgets afloat

CWind has an established track record of successfully delivering subsea and topside balance of plant (BoP) solutions that actively increase efficiencies, improve turbine utilisation and help to minimise generation downtime.

With access to engineering teams, experienced project managers, and highly skilled technicians, CWind effectively reduces safety risk and simultaneously reduces the number of turbine visits, increasing efficiency and turbine optimisation.

Project managers can be permanently situated on site, providing greater strategic support, resulting in improved communication with the windfarm owner to provide a more efficient and effective service.

Typically, as assets age, offshore maintenance costs increase. With a significant number of offshore wind assets entering the later stages of the project lifecycle, it is evident that balance of plant degradation is a growing industry challenge.

Optimising efficiencies and maintaining the structural elements which support the wind turbine generator is crucial to ensure asset life is maximised. Without regularly scheduled maintenance and inspections offshore wind assets can deteriorate, causing faults requiring reactive maintenance leading to unplanned downtime and loss of revenue.

CWind provides statutory subsea inspections and repair, as well as pro-active maintenance, to ensure optimal asset integrity and overall longevity of an offshore wind project.

Working with clients, CWind delivers flexible, turnkey solutions, designed around specific wind farm sites, utilising an experienced fleet of in-house multi-purpose CTVs, highly skilled technicians, and project managers with a robust track record of successful project delivery.

CWind has experience at over 50 offshore wind farms across the UK and Europe, providing service support for 13GW of power since 2010, with an extensive track record of O&M delivery, including a long-term maintenance contract at Westermost Rough OFTO.

Our Key Capabilities:

  • Retrofits and snagging
  • Corrosion protection
  • Statutory inspections
  • Scheduled routine maintenance
  • Preventive & Reactive maintenance
  • Marine co-ordination & logistics
  • Cleaning
  • Coating repairs
  • Bolting
  • HVAC
  • HV/LV Services
  • Blade repair
  • Fire and life-saving systems
  • ROV operations
  • Bathymetric surveys
  • Cable crossings
  • Live monitoring
  • Cable burial depth
  • Anodes and cathodes inspection and replacement
  • Cable Protection System (CPS) inspections and repairs
  • Foundation inspections

Statutory Inspections

Vigilant attention to detail for topside and subsea offshore maintenance

It is critical, that inspections are performed by experienced, methodical experts alert to every detail.

The implications if a wind turbine is offline for unscheduled maintenance can be approximately £10,000 in lost revenue a day, and when factoring in the additional costs of support vessels, technicians and equipment for repairs it could run into the millions.

For large-scale wind turbine assets and auxiliary equipment, unaddressed minor problems or oversights can quickly escalate into costly stoppages, lost revenue and expensive repairs.

CWind is on hand for both scheduled and unscheduled maintenance with fully trained technicians for turbine, cable and foundation maintenance, utilising a dedicated fuel-efficient fleet of purpose-built CTVs; all the elements required to complement OEM contracts in one bespoke package.

CWind takes the headache out of preparing, planning and executing inspections with comprehensive packages tailored to each customer and project requirement.

Our independent, certified inspectors use state-of-the-art equipment and years of experience to fully document and report defects, helping to create optimised maintenance plans.

Our turbine technicians undertake 100 and 500 hour servicing, gearbox inspections, generator alignment, “wet” service, pitch cylinder inspection & change out. Our specialist technicians also perform endoscope inspections and evaluations on gearboxes and main bearings’, minimising turbine down time.

CWind’s partnerships with key qualified specialists facilitates our statutory inspection works. These works range from simple inspection and certification of lifting equipment and self-retracting lanyards, to inspection and certification of life saving equipment.

CWind has extensive experience, a can-do approach and a proven track record in inspections of steel structures. CWind is currently providing statutory inspection teams for all of the offshore wind farm sites for a major European developer, and a 20-year contract for above water structural inspections and maintenance services at Westermost Rough offshore sub-station for Transmission Investment. Previously, CWind held a two-year contract for all above water structural and statutory inspections and maintenance services for E.ON at Humber Gateway Offshore Wind Farm.

Our Key Capabilities:

  • Critical components including endoscopic analysis
  • Root cause analysis
  • Oil evaluation
  • Blade inspections
  • Fall protection and anchor bolts
  • Davit cranes
  • Personal protective equipment
  • Visual, video and photographic surveys
  • Sub-surface ROV surveys
  • Non-destructive testing and inspections
  • Marine growth inspections
  • Balance of plant including paint, equipment and structural inspections
  • Pre-warranty, insurance and end-of-warranty inspections
  • Anode inspections
  • Assessments before, during and after construction
  • Creation of optimised maintenance plans
  • Working in line with international industry standards
  • O&M support for more than 6GW of power generated by the offshore wind sector


CWind Services

Corrosion Protection

Full corrosion protection services, inspection, procurement, application and transportation to maximise asset lifetime

Subsea Survey Solutions

Utilising the CTV fleet to undertake subsea surveys, a cost effective solution maximising the benefits of time on site

Topside Inspection, Maintenance and Repair

CWind has a robust track record of experience delivering Topside Inspections, Maintenance and Repair (IMR), utilising owned assets, best people and proven procedures, delivered through one interface

Subsea Inspection, Maintenance and Repair

Optimised, flexible solutions using cutting edge technology for Subsea Inspections, Maintenance and Repair (IMR) to meet customer requirements

Crew Transfer Vessel Charter

Transporting technicians quickly and safely, to and from site with a fleet of 17 vessels

Our Latest News:

Posted: 11/10/2023

CWind Enters New Chapter with Acquisition by Inspirit Capital, Strengthening Commitment to Offshore Wind Industry

CWind, a leading provider of offshore wind support services, today announced...

Posted: 04/11/2021

Next generation CTVs arrive to help combat emissions

CWind has worked with naval architects to develop the world’s first...

Posted: 24/09/2021

Protect, Preserve, Repair: reducing the cost of offshore wind through proactive maintenance, inspection, protection and repair

Ambitious environmental targets from governments around the world, including Germany’s 20GW...

Posted: 02/08/2021

World’s First Hybrid-Powered Surface Effect Ship Classed by Bureau Veritas

Bureau Veritas (BV), a world leader in testing, inspection, and certification...

Posted: 25/06/2021

Day of the Seafarer

Today and every day we appreciate our offshore colleagues, who work...

Posted: 06/04/2021

CWind completes campaign at Vattenfall’s Danish Kriegers Flak Offshore Wind Farm

CWind, a leading provider of project services, Crew Transfer Vessels (CTVs)...

Posted: 10/03/2021

CWind Completes Sale of Endeavour to Wood Marine as Part of CTV Fleet Upgrade Project

CWind, a leading provider of project services and Crew Transfer Vessels...

Posted: 04/11/2020

CWind completes 2020 works at East Anglia ONE Windfarm

CWind, has completed this year’s campaign as part of their East...

Posted: 25/08/2020

Ten years of CWind

From humble beginnings in a Brightlingsea shipyard, to an international company,...

Posted: 25/08/2020

Vision of Offshore Renewables in 2030

THE NEXT DECADE Throughout its 10-year history, CWind, has been at...

Posted: 14/07/2020

Why safety and flexibility are still key to efficient CTV operation

“If you’d told me at the start of 2020 that we’d...

Kentish Flats and CWind Tempest
Posted: 08/06/2020

OREAC: 1,400 GW of offshore wind is possible by 2050, and will be key for green recovery

The Ocean Renewable Energy Action Coalition (OREAC) is an initiative led...

CWind new vessel renders
Posted: 22/04/2020

CWind continues fleet expansion to enable robust maintenance of vital power networks

CWind has continued with its fleet development and expansion plans by...

CWind Scottish Power Renewables EA1 offshore wind farm
Posted: 15/04/2020

Scottish Power Renewables announces CWind East Anglia One contract award

CWind is delighted to share Scottish Power Renewables’ latest press release...

Posted: 13/01/2020

Ocean Renewable Energy Action Coalition Launches to Accelerate Global Offshore Wind Capacity

An international Ocean Renewable Energy Action Coalition has been formed to...

Posted: 11/12/2019

Engineering the next steps on the path to zero-emissions CTVs

The zero-emissions goal is shared by many companies in the offshore...

Image of Paul Redpath, Project Manager at CWind
Posted: 21/11/2019

My life in offshore wind: Paul Redpath, Project Manager, CWind

As a relatively young industry, offshore wind attracts people from a...

Posted: 16/10/2019

CWind secures contract to deliver world’s first hybrid propulsion SES to Ørsted

CWind announced today a long-term charter contract agreement with Ørsted, delivering...

Posted: 04/02/2019

CWind Digitises Critical Operations With CrewSmart

CWind is pleased to share CrewSmart’s latest press release: Leading provider...

ORE Catapult Levenmouth Turbine
Posted: 24/01/2019

CWind & ORE Catapult Drive UK Offshore Wind Technology Innovation

Thursday 24th January 2019. CWind, a leading provider of topside, splash...

Posted: 23/10/2018

CWind Taiwan Completes Inaugural Contract at Yunlin Offshore Wind Farm

CWind Taiwan, a joint venture between CWind and International Ocean Vessel...

Posted: 08/09/2017

CWind Awarded TP Gate Contract

Two DONG Energy offshore wind farms set to benefit from CWind...

Posted: 08/08/2017

CWind Secures Major Cable Pull-in Contract at Merkur Offshore Wind Farm

Chelmsford, Tuesday 8 August 2017. CWind, a leading provider of services...

Posted: 03/07/2017

CWind Announces Two-Year Crew Transfer Vessel Extension on Key Offshore Wind Farm Project for Dong Energy

CWind, a leading provider of services to the offshore wind industry,...

Posted: 02/05/2017

CWind Reaches Halfway Point of 15 Month Secondary Works Contract for Iberdrola’s Wikinger Offshore Wind Farm

CWind, a leading provider of services to the offshore renewables industry...

Posted: 16/02/2017

CWind Invests in Largest Crew Transfer Vessel to Date

CWind, a leading provider of services to the offshore wind industry,...

Posted: 26/01/2017

CWind Supports Centrica Jack Up Operations from Grimsby Hub

CWind, a leading provider of services to the offshore wind industry,...

Posted: 04/01/2017

CWind Provides Crew Transfer Vessels for EON Blade Maintenance Work at Robin Rigg

CWind, a leading integrated service provider in the offshore wind industry,...

Posted: 08/12/2016

CWind provide CTVs for Siemens Blade Maintenance Campaign

CWind, a leading provider of services to the offshore wind industry,...

Posted: 05/12/2016

CWind Provides ROV Subsea Inspections for E.ON at Amrumbank West

CWind, a leading provider of services to the offshore wind industry,...

Posted: 22/11/2016

CWind Wins Contract To Undertake Secondary Works For Geosea At Galloper Offshore Wind Farm

CWind, a leading provider of services to the offshore wind industry,...