GreenMarine — Complete hydrogen solutions for maritime decarbonisation
Decarbonising Shipping, From Tankers to Tugboats.
GreenMarine is a hydrogen-based retrofit solution suite for the maritime ecosystem — helping large ships, port vessels and small boats cut emissions, reduce fuel costs, and prepare for IMO-aligned sustainability goals.
The maritime challenge
Shipping contributes a meaningful share of global CO₂ and local pollutants (PM, NOx, CO, HC). Large vessels burn huge volumes of HFO/MDO; port vessels idle for long hours creating dense local pollution; smaller craft face rising fuel costs and regulatory pressure.
- Large ships consume high volumes of bunker fuels with large CO₂ footprints.
- Port vessels and tugs create localized air quality issues during long idling periods.
- Existing options (LNG, scrubbers) are infrastructure-heavy, costly, and often lack clear ROI.
The sector needs compact, safe retrofit options that deliver measurable reductions and operational savings — without long dry-dock windows or heavy infrastructure changes.
The GreenMarine advantage
Adaptation of Saarthi’s proven hydrogen retrofit platform for marine duty cycles — on-demand hydrogen, metered dosing, and integration with GreenVision for monitoring and verification.
On-demand hydrogen (no storage)
Generated as needed from water — removes bulk storage and associated risks.
Metered dosing & smart control
Advanced electronics modulate supply based on engine load for safe, efficient operation.
Safety-first, marine-grade design
Redundant sensors, automated shutoff, and design for vibration, humidity and long duty cycles.
Compatible across fuels & engines
Works with HFO, VLSMDO, MDO/MGO and diesel auxiliaries — expected savings vary by engine and duty cycle.
Expected operational savings
Propulsion: ~3–5% (expected). Auxiliary engines: ~4–6%. Boilers at partial load: up to ~8% — results depend on duty cycles.
Emission reductions (expected)
PM `>`80% (land tests), HC `>`70%, CO `>`50%, NOx up to ~10%, CO₂ reduced proportional to fuel saved.
Applications across maritime & port operations
GreenMarine delivers across the vessel and port ecosystem — from tankers to tugs to small craft.
Large Ships
Bulk carriers, container ships, tankers, cruise liners.
Port Vessels
Tugboats, supply vessels, ferries, pilot boats.
Smaller Vessels
Fishing boats, coastal cargo, patrol craft.
Port Infrastructure
Cranes, port vehicles and auxiliary DGs (pair with GreenGen & GreenDrive).
Auxiliary Engines & Boilers
Boilers and service gensets with high partial-load benefits.
GreenVision integration
Every GreenMarine deployment can connect to GreenVision for real-time monitoring, carbon accounting per vessel, automated ESG/IMO-aligned reports, and unified dashboards for fleet operators and port authorities.
- Real-time fuel & CO₂ monitoring per ship / asset.
- Automated ESG reporting aligned with IMO and other frameworks.
- Dashboards for operators, ports and regulators — provable outcomes and auditable logs.
With GreenVision, maritime operators can both reduce emissions AND prove compliance with data-driven, auditable reporting.
Roadmap & validation
Technology validated on generators and land engines. Marine trials and Class certification are in progress — results will validate fuel savings and emission reductions under marine duty cycles.
Benefits at a glance
Quick summary of why operators choose GreenMarine.
One solution for maritime decarbonisation — from ships to ports.
GreenMarine helps vessels and ports become cleaner, more efficient, and ESG-ready — without complex retrofits.