Development of Practical Wind-Assisted Ship Propulsion (WASP) Calculation for Fuel Consumption and Emission Reduction

Isna Aulia Marifa (Universitas Pembangunan Nasional Veteran Jakarta)
Dian Purnama Sari (Research Center for Hydrodynamic Technology, National Research and Innovation Agency, Jl. Hidro Dinamika, Keputih, Kec. Sukolilo, Surabaya, Jawa Timur, Indonesia 60117|National Research and Innovation Agency.)
Wiwin Sulistyawati (Department of Naval Engineering, Universitas Pembangunan Nasional Veteran Jakarta, Jl. R.S Fatmawati No. 1, Cilandak, Jakarta Selatan 12450|Universitas Pembangunan Nasional Veteran Jakarta.)

Indonesian Journal of Maritime Technology or abbreviated (ISMATECH)
Vol. 4 No. 1 (2026): Volume 4 Issue 1, June 2026

Integration of Wind-Assisted Ship Propulsion (WASP) serves as a strategic solution for the maritime industry to achieve Net Zero Emission by 2050. This research evaluated the interaction between sail design and route optimization for a 265 GT fishing vessel operating around Benoa, Bali to maximize fuel savings and emission reductions. Three hard sail profiles, arc-shaped, NACA 0012, and NACA 0015, were analyzed at operational speeds of 7 and 10 knots. An improved weather-routing framework based on the A* (A-star) algorithm* was developed, integrating weather forecasts, ship specifications, and force matrices to determine optimal navigational paths. Simulations conducted on routes around Benoa, Bali, demonstrated that the combination of aerodynamic wing sails and intelligent routing improved efficiency by 1.24% to 12.59%. The results confirmed that the synergy between WASP technology and precise pathfinding significantly reduced carbon footprints while enhancing the economic viability of shipping operations. These findings provide a scalable framework for sustainable maritime practices and for achieving global decarbonization targets.