Drag penalty due to fouling on a high-speed catamaran: a frictional resistance problem

Abstract This study investigates the effect of surface roughness on the resistance components of a high-speed catamaran using CFD. While the influence of roughness has been extensively studied for low-speed monohulls, its impact on high-speed multi-hull vessels remains largely unexplored. Unlike previous work focused on monohulls, this research examines the unique hydrodynamic response of the Delft 372 catamaran at a high Froude number (Fr = 0.75). Simulations employ a URANS approach with a roug