Hydrodynamic Analysis in Redesigning a Monohull Passenger Ship into a Catamaran

In line with technological developments, many studies have led to the factors that consider hull shape planning. Therefore, innovations in form planning are primary basis for obtaining a is considered efficient reducing ship resistance and fuel consumption. This study aims modify design of monohull transform it into catamaran while maintaining total length Displacement ratio. The model used Monohull passenger rounded modified become chine shape. symmetrical was determined by stagger ratio S/L 0.3. hydrodynamic investigations calculations models using Computational Fluid Dynamic (CFD). Analysis on both hulls carried out components resistance, viscous friction wave variations Froude number: 0.3: 0.5: 0.7: 0.9 1.2. From results analysis, found calculation coefficient Chine smaller than monohull. Fn 0.7 at 0.3, produces more favorable other speeds.