Existing vessels: Replace them — or improve their CII performance?
A practical retrofit solution designed for ships already in operation.
Improve CII ratings without engine replacement.
Available Summer 2026
Is your fleet at risk under upcoming
CII requirements?
Request a retrofit feasibility assessment based on:
- vessel type
- operating routes
- fuel conditions
- compliance targets
Preliminary evaluation available at Sea Japan 2026.
Do you have these concerns regarding "Environmental Measures" or "Introduction of New Fuels"?
Regulations are clear,
but the "next step" is not.
Fuel selection is difficult
and carries high risk.
Retrofitting is possible,
but will it be profitable?
Neither newbuild replacement nor slow steaming.
We “CONHIRA” introduces a third path:
A retrofit solution that improves CII performance while keeping your existing engine unchanged.
A practical retrofit approach to fuel transition challenges
Introducing the Automatic Fuel Blender
Designed specifically for existing vessels requiring:
- improved CII ratings
- fuel flexibility
- regulatory readiness
- cost-controlled transition strategy
[POINT 1]
Low-cost retrofit for existing vessels
Improve carbon performance without modifying the main engine.
Key advantages:
Key advantages:
- No engine replacement required
- No major piping modification required
- Short installation lead time
- Compatible with current onboard systems
Achieve regulatory compliance with minimal capital investment.
[POINT 2]
Improve CII ratings with a realistic investment approach
Enable measurable CII improvements through controlled fuel blending strategies.
Supports operators in:
Supports operators in:
- avoiding operational restrictions
- maintaining vessel asset value
- improving chartering competitiveness
- preparing for Fuel EU Maritime and EU ETS exposure
Not only compliance — but operational positioning.
[POINT 3]
Fuel flexibility for uncertain future fuel choices
Future fuel standards are still evolving.
Our system enables adaptation without committing to a single fuel pathway.
Capabilities include:
Our system enables adaptation without committing to a single fuel pathway.
Capabilities include:
- compatibility with multiple fuel scenarios
- adjustable blending ratios
- readiness for future regulatory transitions
- strategic response to carbon cost exposure
Designed for transition — not speculation.
Can your vessels improve CII ratings
without engine replacement?
Request a vessel-specific feasibility study.
Evaluation available based on:
Evaluation available based on:
- vessel specification
- trading routes
- fuel strategy
- compliance targets
Consultation available during Sea Japan 2026.
Why ship operators choose CONHIRA
Field-ready reliability
Integrated support from design through installation and operation. Solutions engineered for real onboard constraints — not theoretical models.
Site-Oriented
Customization
We don't just "sell products." We are a solution manufacturer that designs the optimal answer from scratch, taking into account each client’s specific operations, constraints, and risks. Our value shines brightest when solving problems that off-the-shelf products cannot.
Support beyond
installation
Operational environments change. We support continuous optimization for:
- fuel condition changes
- operational load variation
- troubleshooting requirements
- long-term compliance strategy
Ensuring lifecycle performance stability.
Evaluate whether your fleet can improve
CII ratings without major modification
Meet us at Sea Japan 2026
or request a preliminary feasibility assessment today.
or request a preliminary feasibility assessment today.