ESD Fit Ranking, Verified Savings, Propulsive Energy, Fuel Reduction, Drydock Impact & Retrofit ROI

Propeller Energy-Saving Device Retrofit Selection, Fuel Savings & ROI Tool

Shortlist the propeller energy-saving technologies most aligned with the vessel's operating profile and dominant hydrodynamic loss, then test the economics using a supplier, CFD, model-test or sea-trial savings assumption. Advanced mode compares candidate devices independently with low/base/high savings, off-hire, CAPEX, CO₂ value, NPV and hydrodynamic-readiness gates.

Data type
Currency
Currency selection changes display only. No exchange-rate conversion is performed.
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Need much more depth? Click Advanced above. Add weighted operating conditions, candidate-by-candidate low/base/high savings, installation/off-hire cost, maintenance, CO₂ value, lifecycle NPV, propeller/rudder clearances and CFD/model-test/class readiness.

Fast ESD Selection & ROI Screen

The shortlist is a Ship Universe screening fit, not a hydrodynamic performance prediction. Savings must come from the project basis, supplier, CFD, model test or measured validation.

kW at the operating condition used for the annual screen.
h/year at the representative shaft-power basis.
g/kWh fuel input associated with propulsion power.
Selected currency / t fuel.
% reduction in propulsion fuel at comparable operating output.
Selected currency.

Hydrodynamic & Vessel Basis

m.
m.
m.

Weighted Operating Profile

Savings economics should reflect where the vessel actually operates, not only the original design point. Row labels are not submitted to Ship Universe Tool Data.

ConditionShaft power kWHours / yearSFOC g/kWhFuel price / tWeighting confidence %

Candidate ESD / Propulsion Retrofit Register

Candidates are compared independently. The tool does not add savings percentages from multiple devices together. Enter project-specific low/base/high savings for each candidate.

CandidateDevice classLow save %Base save %High save %CAPEXOff-hire daysAnnual maint.Confidence %Install ready?

Economic & Carbon Basis

tCO₂ / t fuel. Use the actual project fuel factor.
Selected currency / tCO₂.
Selected currency / day.
% on device + common costs.
years.
%.
%.
years.

Hydrodynamic / Approval Readiness

Hydrodynamic retrofit screening only: this tool is not a CFD analysis, model test, propeller design, cavitation assessment, shafting calculation, torsional-vibration analysis, structural design, class approval or verified fuel-savings guarantee. Device-fit rankings are Ship Universe screening indicators only. Actual savings depend on the specific hull, wake, propeller, rudder, draft, speed, loading and operating profile and should be validated by the ESD / propeller supplier and appropriate hydrodynamic analysis.
By the ShipUniverse Editorial Team — About Us | Contact