Wind-Assisted Propulsion Sizing, Route Benefit, Deck Impact & Retrofit ROI Tool
Screen rotor sails, suction sails, rigid wings, soft sails, kites and other wind-assisted propulsion concepts against the vessel and route that must actually support them. Convert useful wind thrust at ship speed into propulsion-equivalent power, subtract WAPS auxiliary energy, then estimate annual fuel and CO₂ savings, deck impact, topweight, air-draft margin, unit count for a target saving, retrofit cost, payback and lifecycle NPV.
Fast Wind-Assist Net Benefit Screen
Simple mode treats the entered annual WAPS-active hours as already reflecting route wind suitability and system availability. Useful thrust should be a representative net forward thrust, not aerodynamic lift or side force.
Vessel, Fuel & Wind-System Basis
WAPS Unit & Deck Integration Basis
Unit thrust is the representative useful forward thrust during favorable conditions. Do not substitute aerodynamic lift or maximum design load. For kites, physical deck footprint can be entered for launch / handling equipment, but the offshore operating envelope is outside this tool.
Annual Route / Operating Profile
Favorable-wind share represents sea time where apparent wind angle and strength can produce useful thrust. Thrust realization scales the entered per-unit thrust within those favorable periods. System availability is applied separately.
| Route / condition | Hours / yr | Speed kn | Propulsion kW | Favorable wind % | Thrust realization % | Cargo / deck conflict % |
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