Air Lubrication System Net Fuel Savings, Compressor Load & Retrofit ROI Tool
Separate gross hydrodynamic power reduction from the fuel and electrical cost of producing the air layer. Simple mode turns propulsion power, gross saving, ALS availability and compressor load into net annual fuel saved and payback. Advanced mode models multiple operating conditions, air demand, compressor capacity, generator margin, off-state drag, carbon value, retrofit cost and lifecycle NPV.
Fast Net Savings & Payback Screen
Gross ALS benefit is entered as propulsion power reduction while the system is active. The calculator subtracts the equivalent fuel used to generate compressor / blower electrical power before reporting net fuel savings.
Vessel, Hull & Fuel Baseline
Annual ALS Operating Profile
Use separate laden, ballast, slow-steaming or other conditions where propulsion power, draft, gross benefit, air demand or ALS availability changes materially. Gross reduction should come from vessel-specific vendor, trial, CFD or model-test data where available.
| Condition | Hours / yr | Speed kn | Draft m | Propulsion kW | Gross reduction % | Air demand m³/min | ALS availability % | Off-state drag % |
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