Decarbonisation
Environmental Compliance

Decarbonisation Roadmap for CII compliance and vessel lifetime extension

Client Confidential
Year 2025

VESSEL TYPE
 Bulk carrier 


SOW
 Decarbonisation strategy development, CII modelling, retrofit scenario evaluation, techno-economic analysis, and implementation roadmap.
9+
years lifetime extension

14
months ROI

16.5%
fuel savings achieved

CLIENT CONTEXT
CII downgrade risk and lifetime preservation

The 82,000 DWT bulk carrier, built in 2011/2012, was originally optimised for cargo capacity rather than fuel efficiency. Although rated C in 2024, projections showed a downgrade to D starting in 2025 under IMO Carbon Intensity Indicator (CII) regulations.

The required corrective improvement was calculated at 20.2% fuel efficiency gain to maintain compliance.

Without intervention, the vessel faced:

  • Reduced charter attractiveness
  • ESG and financing pressure
  • SEEMP Part III corrective action requirements
  • Potential early commercial phase-out

The owner required a technically sound and financially viable retrofit pathway aligned with 2026 dry dock planning.


THE CHALLENGE
Closing a 20.2% efficiency gap

The vessel required significant efficiency improvement while:

  • Avoiding high-risk or immature technologies
  • Maintaining cargo capacity
  • Limiting upfront CAPEX exposure
  • Achieving short payback period
  • Securing CII compliance through 2030+

The retrofit solution needed to be technically achievable during scheduled docking and economically justified.


THE WORK TO BE DONE
Project phases

Define a technically and financially viable decarbonisation pathway to prevent CII downgrade and extend vessel lifetime beyond 2030.

The required scope included:

  • Assessing the vessel’s current performance baseline (fuel consumption, AER, CII trajectory)
  • Determining the efficiency gap required to maintain C-rating
  • Identifying all feasible retrofit and operational improvement measures
  • Evaluating hydrodynamic, propulsion, digital optimisation and alternative support technologies
  • Quantifying fuel savings potential per measure
  • Comparing CAPEX, OPEX, ROI and compliance impact
  • Assessing operational constraints (cargo impact, installation window, dry dock timing)
  • Selecting a technically realistic and financially justified strategy
  • Aligning the final roadmap with the scheduled 2026 dry docking

The objective was not just to reduce emissions, but to balance:

  • Regulatory compliance
  • Investment exposure
  • Operational risk
  • Asset value preservation
PROJECT SOLUTION
Steps
01.

GLO Marine conducted a full technical review of operational data for 2023–2024, including fuel consumption, distance sailed, and AER calculations.

CII trajectory modelling confirmed a downgrade to “D” starting in 2025 without corrective action.

An efficiency improvement target of approximately 20% was established to secure compliance.

02.

Four retrofit scenarios were developed and benchmarked, assessing fuel savings potential, CAPEX, OPEX, ROI, and long-term CII impact.

Following comparative evaluation, the Low-CAPEX Scenario 1 was selected as the optimal balance between compliance security and financial performance.

The selected retrofit package included:

  • Erma First Energy Saving Devices (FlexCap, FlexFin, FlexRing)
  • Sonihull ultrasonic antifouling system
  • Operational trim optimisation measures
03.

Final projected results:

  • 16.5% fuel savings
  • CAPEX approx. $816,000
  • 14-month ROI
  • CII “C” maintained until 2030
  • Estimated 42,000+ tons CO₂ reduction over evaluation period
  • No cargo capacity reduction
04.

The retrofit was structured around the 2026 scheduled dry docking.

Integration complexity was minimised to reduce downtime.

A corrective action framework was prepared in line with SEEMP Part III requirements.

The final roadmap ensured compliance stability while preserving commercial flexibility.

END OF DELIVERY
The outcomes

Final results
  • CII “C” rating secured through 2030
  • 16.5% fuel savings achieved
  • CAPEX: approximately $816,000
  • 14-month ROI
  • Approximately 9-year lifetime extension
  • Reduced exposure under FuelEU Maritime and EU ETS
  • No impact on cargo capacity or operations

GLO Marine delivered a structured, data-driven decarbonisation roadmap that balanced compliance, investment, and long-term asset value.

Through targeted retrofit selection and rigorous techno-economic validation, the vessel secured regulatory stability with controlled capital expenditure and measurable financial return.


Work with us
Contact our retrofit specialist for details
inquiries@glo-marine.com +40790870949