Alternative-Fuel Engine Retrofit, Fuel-System Integration, Tank Space & Payback Tool
Screen whether an existing ship can realistically convert to a lower-carbon or alternative marine fuel. Preserve the vessel's annual useful propulsion-energy requirement, translate it into alternative-fuel mass, size the endurance tank footprint, test non-revenue-space fit, and compare annual fuel economics against retrofit CAPEX. Advanced mode compares multiple fuel concepts with pilot fuel, lifecycle GHG, displaced cargo value, NPV, break-even fuel price and integration readiness.
Fast Alternative-Fuel Retrofit Screen
Simple mode uses screening physical-property presets for current and alternative fuels. Those presets are shown in the results and are editable in Advanced. Commercial inputs remain fully user-entered.
Vessel & Current-Fuel Baseline
Alternative-Fuel Candidate Register
Fuel properties and commercial assumptions are editable. Storage density, usable fill and space factor are project assumptions because pressure, temperature, insulation, cofferdams, access, containment and tank arrangement vary. Candidate labels are not submitted to Ship Universe Tool Data.
| Candidate | Fuel class | LHV MJ/kg | Density t/m³ | Rel eff % | Pilot energy % | Fill % | Space factor | Fuel price / t | LCA gCO₂e/MJ | CAPEX override | Maint delta / y |
|---|
Pilot / Secondary Fuel & Carbon Basis
Shared Retrofit CAPEX Build
Candidate CAPEX override replaces this non-off-hire shared build for that candidate. If override = 0, the shared build below is used.