ANALYSIS OF RESISTANCE AND STABILITY WITH VARIATIONS OF DEADRISE ANGLE ON RC BOAT PLANNING HULL USING MAXSURF SIMULATION

A high-speed vessel with a planing hull is one type of ship that demonstrates good efficiency as a fast craft. This type of vessel relies on speed to lift part of its hull out of the water. An RC boat serves as a miniature representation of a real ship that is controlled by radio signals, making it an effective medium for design simulation and hydrodynamic performance testing. One of the design parameters that influence the hydrodynamic performance of a vessel is the deadrise angle, which is the inclination angle of the hull bottom relative to the horizontal plane. The deadrise angle also affects two key aspects, namely resistance and stability. A smaller angle may reduce the vessel’s lateral stability, whereas a larger deadrise angle provides better comfort in wave conditions but increases resistance due to the sharper hull form. This study was conducted to analyze resistance and stability under variations of deadrise angles on an RC boat with a planing hull using Maxsurf simulation. The results indicate that a 10° deadrise angle yields the lowest resistance at high speed but with lower stability. A 20° deadrise angle offers the highest stability but with greater resistance. Meanwhile, a 15° deadrise angle provides the most balanced performance between speed efficiency and stability, and thus is recommended as the optimal angle since it delivers the best overall performance for a planing hull RC boat.