TRIM OPTIMIZATION • OPERATING CONDITION • REALIZED FUEL SAVING • ROI • NPV

Ship Trim Optimization Fuel Savings & ROI Tool

Translate a vessel-specific trim-performance estimate into realized annual fuel, CO2 and financial value. Simple mode screens one annual business case. Advanced mode separates laden, ballast and partial-load operating states, current and target trim, eligibility, execution, weather retention, validation confidence, implementation cost and downside sensitivity.

Figures represent
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Need draft bands, current/target trim and route-condition weighting?Advanced separates each operating condition and shows how much of the technical trim benefit survives eligibility, availability, sea-state and execution factors.
FuelRealized MT saved
ReturnPayback, NPV & IRR
RiskBreak-even fuel saving

Annual Fuel & Trim Benefit

Use a vessel-specific trim-saving estimate from CFD, model tests, sea trials, a validated performance system or measured sister-vessel data. The tool does not assign a generic trim-saving percentage.

MT/year affected by at-sea propulsion.
Technical saving before eligibility and execution.
Share of annual propulsion fuel where a usable trim recommendation exists.
Share of technical saving actually achieved operationally.
$/MT.
$/tCO2. Simple mode uses 3.114 tCO2/MT fuel.
Model/CFD, integration, commissioning and training.
Annual recurring trim optimization cost.
Years.
%/year.
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Advanced: condition-specific trim map and realized savingsEnter the ship-specific target trim and gross saving for each operating condition. Live screening normalizes condition shares if they do not total 100%; Calculate requires a total of 100% ±0.5%.

Operating Profile

Data/software/recommendation availability.
Retained share of calm-water trim benefit.
Use 100% only when the saving basis is well validated.
Relative reduction of realized trim benefit.

Trim Operating Conditions

Positive trim is aft by convention. Current and target trim are decision-support inputs; this calculator values a known trim recommendation and does not predict the hydrodynamic optimum.

UseConditionSea share %Draft mCurrent trim mTarget trim mFuel MT/dayGross saving %Eligible %Execution %

Fuel, Carbon & Recurring Value

tCO2/MT fuel.

Implementation Cost

Lifecycle Assumptions

Implementation Readiness

These checks do not change the ROI math. They identify assumptions that should be closed before using the trim model operationally.

Stress Cases

Stress cases scale bunker price, technical trim saving, execution and implementation cost.

CaseFuel price ×Trim saving ×Execution ×CAPEX ×
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