96.25 m
LOA
20m
BEAM
120
POB
50t (AHC) / 10t (MCC)
CRANE CAPACITY
800 m2
DECK SPACE
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C-CSOV – the new Generation of CSOV
The DO C-CSOV is a new generation of offshore energy vessel, designed around a single idea: one flexible asset that covers what today often requires several. By combining accommodation, Walk-to-Work, logistics and light construction in one modular platform, it lets operators do more from a single vessel.
Built for both Offshore Wind and Oil & Gas, it delivers value across the entire offshore energy market.
The Idea
The DO C-CSOV originated from a simple observation: offshore projects require highly capable vessels that offer flexibility to cope with complexity and risk. Meanwhile, Walk-to-Work assets are increasingly optimized around a single purpose and market. This raised a fundamental question:
What if one were to innovate the prevailing concept into a holistic, versatile Offshore Energy Vessel?
A single platform, supporting energy projects with a broad range of services. Building on Walk-to-Work as a primary purpose and enhancing it with complementary capabilities. A platform, offering synergies with installation campaigns, efficiency in marine operations and providing standing contingency for materializing offshore risks.
“ My object has been, first to discover correct principles and then to suggest their practical development.”
James Prescott Joule
Our Design Principles
Following Joule’s idea, every design decision was measured against a set of fundamental principles – the principles that shape how we develop our C-CSOVs and the value we deliver to the offshore energy market. These are our design principles.
Safety & Operability
Safer operations.
Less weather downtime.
Less weather downtime.
Safety should never come at the expense of productivity. Our C-CSOV was designed to maximize operational capability in challenging offshore environments while maintaining the highest safety standards. By carefully optimizing vessel systems, station-keeping performance and offshore interfaces, the vessel extends the workable weather window and increases operational availability. The result is a platform that helps clients complete more work safely while reducing costly downtime caused by environmental limitations.
Flexibility
One platform.
Multiple scopes.
Zero compromise.
Multiple scopes.
Zero compromise.
Starting from the proven CSOV concept, we deliberately expanded the vessel’s scope to support a broader range of offshore energy activities without compromising operational performance. The vessel’s flexibility creates value through synergies with capital-intensive offshore assets while simultaneously providing built-in contingency capability offshore. This allows operators to reduce vessel spreads, respond to unforeseen project developments and execute more work from a single platform.
Reliability
Minimize Risk.
Maximize Availability.
Maximize Availability.
Reliability is built long before a vessel enters operation. Our C-CSOV combines proven equipment from leading suppliers, experienced crews and robust operational processes to deliver dependable performance throughout its lifecycle. By prioritizing mature technologies and practical solutions, we minimize operational risk and maximize vessel availability for our clients.
Efficiency
More work per day.
Lower cost per task.
Lower cost per task.
Efficiency is not simply about speed or fuel consumption. It is about maximizing productive offshore time throughout the project lifecycle. Advanced station-keeping, optimized personnel movement and streamlined workflows let offshore tasks run more efficiently and with fewer interruptions, reducing overall project cost while increasing daily productivity.
Comfort
Designed for wellbeing. Built for performance.
Offshore comfort is not a luxury. It is a prerequisite for sustainable operational performance.
The vessel has been designed to support meaningful rest and recovery through spacious single cabins, dedicated recreation areas and reduced vessel motion. By creating an environment where people can feel at home at sea, our C-CSOV helps improve wellbeing, retention and productivity throughout extended offshore campaigns. People remain at the center of every successful offshore project.
Sustainability
Lower emissions today.
Zero carbon tomorrow.
Zero carbon tomorrow.
Sustainability was embedded into the vessel concept from the very beginning. Our C-CSOV’s energy systems have been optimized holistically, from power generation and distribution to propulsion and future fuel readiness.
By combining efficient technologies with a future-oriented design approach, including methanol readiness and scalable battery integration, the vessel supports today’s decarbonization objectives while preparing for tomorrow’s regulatory and environmental requirements.
Modular by design – Efficient by nature
The Deutsche Offshore C-CSOV represents an evolutionary step in the development of Walk-to-Work support vessels. Its unique combination of versatility and benchmark performance enables contractors and developers to consolidate multiple operational scopes into a single, highly capable vessel – without compromises.
Time to go
Walk-to-Work is where the DO C-CSOV earns its keep. The market’s largest gangway working range, paired with outstanding DP performance, keeps personnel transferring safely across a wide weather window – so more shifts are worked, waiting-on-weather is cut and the campaign stays on schedule.
For the charterer, that reliable W2W capability is also what lets the vessel fit neatly alongside the rest of the field. Working with installation and heavy-lift tonnage, it absorbs the personnel-transfer and lighter offshore scopes that would otherwise tie up those CAPEX-heavy vessels – keeping them focused on their core work and the overall spread lean. Fewer vessels in the field means fewer interfaces and a safer campaign, and the same W2W capacity steps in as contingency should transfer become a bottleneck for the primary fleet – protecting the schedule while keeping utilisation high.
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Don‘t waste time
The DO C-CSOV takes on cable repair and replacement – for interarray and AC export cables – as a pre-engineered capability that is ready when it’s needed. That readiness is where the value lies: offshore power cables are critical infrastructure, and a cable failure means lost generation revenue for every day it stays unresolved. Through short mobilisation time, the vessel removes the delays of sourcing scarce cable-repair tonnage and equipment from the spot market, so intervention starts sooner, downtime is cut and project risk stays contained.
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When size matters
The Deutsche Offshore C-CSOV combines a large, unobstructed working deck with enhanced crane capabilities to support a wide range of light construction and installation support activities. Increased deck space enables the mobilisation of larger equipment and reduces the need for frequent port calls, improving offshore efficiency and reducing project costs.
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Your Hands & Eyes Underwater
The DO C-CSOV is a flexible platform for work-class ROV support – from inspection, maintenance and repair to construction support and contingency work. Its low freeboard and modular railings enable safe, efficient over-the-side deployment of high-capacity WROVs for demanding station keeping and special tooling requirements. The result is greater operational efficiency, less reliance on dedicated ROV vessels and valuable extra contingency capacity, when and where it is needed – both during construction and the O&M phase.
As such, the DO C-CSOV can facilitate various tasks such as foundation, cable and scour-protection inspection, cable route and burial surveys, cathodic-protection and anode checks; construction and lift support with touchdown monitoring as well as unplanned subsea interventions.
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A captivating beauty in many dimensions
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Like a home at sea
Clients personnel are embraced as scarce resource, such that the vessel offers a superb living environment. Large individual daylight cabins, superior style and quality merged with low noise and vibration levels give technicians a home at sea experience.