DP1 to DP2 Conversion for Offshore Wind Charter Readiness
DP1 to DP2 conversion projects are increasingly being evaluated together as offshore vessel owners reposition ageing fleets toward offshore wind support and low-emission charter markets.

For many OSVs, PSVs, and AHTSs built before 2010, the challenge is no longer technical capability alone — it is commercial access. Offshore wind charterers increasingly require DP2 notation, redundancy validation, and emissions reduction capability as minimum technical entry criteria. As a result, DP2 charter upgrade projects are becoming one of the fastest-growing retrofit segments across offshore support fleets.

We support vessel owners and operators with feasibility-stage engineering, FMEA development, electrical integration, and Class-compliant retrofit execution for DP1 to DP2 conversion projects.
Why DP1 to DP2 Conversion Is Becoming a Commercial Requirement

Across the offshore wind market, charter access increasingly depends on Class notation rather than vessel age alone. Offshore wind charterers increasingly require DP2 notation, redundancy validation, and emissions reduction capability as minimum technical entry criteria. As a result, DP2 charter upgrade projects are becoming one of the fastest-growing electrical retrofit segments across offshore support fleets.

Industry retrofit projects have shown that offshore wind DP2 conversion can often be completed without major structural reconstruction. In many cases, the conversion scope focuses primarily on redundancy engineering, UPS segregation, switchboard modifications, PMS integration, thruster control architecture, and updated FMEA validation. 

 

DP1 to DP2 Conversion and Hybrid Retrofit Strategy

Modern offshore retrofit projects increasingly combine dynamic positioning class 2 conversion with future-ready hybrid architecture. As offshore charterers place greater emphasis on emissions performance, vessel operators are evaluating how DP upgrades, BESS integration, and low-emission operational capability can be engineered simultaneously rather than as isolated retrofit phases.

Hybrid-ready DP2 architecture allows vessel owners to prepare for future containerised battery integration, peak shaving capability, spinning reserve optimisation, and FuelEU Maritime compliance planning without secondary rework later in the vessel lifecycle.

For DP-capable vessels, this requires careful engineering review of generator configuration, bus-tie philosophy, redundancy groups, UPS segregation, PMS logic, thruster interaction, and operational load profile.

The ABS DP Guide defines the DP system as the combined integration of: power systems, thruster systems, DP control systems, sensors, communication, UPS systems, and redundancy architecture. For DP2 notation, the system must remain operational following any single active component failure.

Key Operational & Commercial Benefits of DP2 Conversion

Offshore Wind Charter Eligibility

DP2 capability is now a baseline requirement across many offshore wind support tenders.

Higher Charter Rates

DP2 offshore wind support vessels typically command higher day rates than equivalent DP1 vessels in traditional spot markets.

Extended Commercial Vessel Life

Conversion can extend the commercial viability of mature offshore vessels by enabling access to new charter markets.

Improved Redundancy & Reliability

DP2 architecture improves fault tolerance, redundancy segregation, and operational resilience during DP operations.


Why GLO Marine for DP2 Conversion Projects

GLO Marine supports vessel owners and operators with feasibility-stage engineering, retrofit planning, and execution support for DP1 to DP2 conversions. Our approach combines marine electrical engineering, DP redundancy analysis, retrofit integration, and Class-compliant upgrade planning focused on offshore wind charter readiness.

We support OSVs, PSVs, AHTSs, dive support vessels, and offshore construction fleets through FMEA development, PMS and switchboard upgrades, proving trials, and DP2 re-notation. Projects are structured to minimise drydock time while aligning the vessel with target charter requirements.

Our teams coordinate closely with Class societies, DP OEMs, switchboard suppliers, PMS integrators, shipyards, and charter stakeholders to deliver technically robust, commercially practical DP2 conversion projects from feasibility through certification.

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Complete DP2 Conversion Engineering & Offshore Wind Charter Readiness Support

The process begins with technical review of:

  • vessel operational profile
  • existing DP architecture
  • generator arrangement
  • switchboard topology
  • thruster configuration,
  • control system capability
  • existing FMEA status
  • target charter requirements

This stage determines whether DP2 conversion is technically and commercially viable for the fleet.

A vessel-specific FMEA is developed to identify:

  • single-point failures
  • cross-connections
  • redundancy gaps
  • hidden failure risks
  • worst-case scenario design intent.

The ABS Guide requires DPS-2 vessels to demonstrate single fault tolerance through FMEA validation and proving trials.

Engineering scope may include:

  • split bus redesign
  • redundant feeders
  • UPS segregation
  • PMS modifications
  • switchboard protection coordination
  • DP console upgrades
  • sensor redundancy
  • communication segregation
  • blackout prevention logic

Conversion scope is typically executed during planned drydock periods to minimise vessel downtime.

Works may include:

  • switchboard modification
  • cabling segregation
  • UPS installation
  • control system integration
  • thruster upgrades
  • commissioning support

Final project stages include:

  • FMEA proving trials
  • DP trials
  • blackout recovery validation
  • fault ride-through testing
  • Class verification

DP2 notation is granted following successful validation and operational testing.



DP2 Conversion as Part of Offshore Wind Fleet Strategy

DP2 conversion is increasingly assessed not only as a technical upgrade, but as a fleet repositioning strategy.

For many offshore vessel owners, conversion enables:

  • access to offshore wind charter markets,
  • stronger charter durations,
  • improved vessel utilisation,
  • and extended asset life.

Modernisation projects may also prepare vessels for future: hybridisation, battery integration, shore power, or emissions reduction pathways.

However, operational and commercial viability depends heavily on vessel age, propulsion and power architecture, operational profile, as well as the target charter specifications. For these reasons, feasibility-stage engineering is required before defining project scope or estimating ROI.

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Typical DP2 Conversion Benchmarks

DP1 OSV to DP2 Upgrade

Typical conversion scope: power redundancy, UPS upgrades, PMS modifications, FMEA, Class re-notation.

~70 days

Typical drydock duration depending on vessel condition, cable routing, switchboard complexity.

12-18 months

Typical payback via 1-2 offshore wind contracts.

30-60%

Charter rate uplift, DP1 spot vs DP2 offshore wind
FAQ about DP1 to DP2 Conversion for Offshore Wind Charters

Conversion is commonly evaluated for:

  • OSVs
  • PSVs
  • AHTSs
  • dive support vessels
  • offshore construction vessels with robust propulsion and electrical infrastructure.

A DP2 feasibility study assesses the vessel’s existing DP architecture, power distribution, thruster configuration, PMS and UPS capability, redundancy philosophy, and FMEA status. The objective is to identify the minimum technical scope required to achieve DP2 Class compliance and align the vessel with intended offshore charter specifications.

Not necessarily. Many DP1 to DP2 upgrades are primarily electrical and control-system retrofit projects involving switchboard modifications, redundancy segregation, UPS upgrades, and DP control integration. Structural modifications depend on equipment arrangement, compartmentation requirements, cable routing, and the extent of additional system installation.

Yes. DP2 re-notation requires an updated Failure Mode and Effects Analysis (FMEA) together with proving trials to validate single-failure redundancy and operational integrity in accordance with Class and DP notation requirements.

Yes. Many owners use DP2 conversion projects to prepare the vessel for future hybridisation, shore power, or Battery Energy Storage System (BESS) integration. Future-ready design may include switchboard capacity planning, PMS architecture updates, cable routing allowances, and power system preparation for later low-emission upgrades.


Where to Start with DP2 Conversion

We begin with a DP2 conversion feasibility — reviewing your vessel's existing FMEA, power architecture, and control redundancy, and identifying the minimum scope required to meet DP2 plus your target charterer's spec. No commitment required. We provide a scope, an indicative cost, and Class pathway within 10 working days.

We can support with:

  • DP1 to DP2 feasibility assessments
  • FMEA, redundancy, and power system review
  • Class approval and re-notation support
  • Retrofit planning, drydock execution, and proving trials
  • Future-ready hybrid and BESS integration pathways

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