Surface modification by superimposing piecewise shape function satisfying hull variation given by arbitrary characteristic curve on surface

Abstract The ship hull form is directly related to each design phase of a ship. This thus frequently designed based on variation well-made parent avoid new risks. However, in variation, satisfactory geometric preservation and good performance continuity the are considered competing requirements. To effectively facilitate an appropriate compromise between these requirements should be achieved. Instead altering parameters, we propose flexible intuitive approach interactively vary surfaces with arbitrary curve constraints focus preserving properties original surface. advantage superposition or surface leveraged modify shape. An intermediate that satisfies constraint has smooth shape constructed superimposed top yield desired A control mechanism using function simplifies modification constraint. developed method was applied characteristic curves section situated stern part container vessel. changes hydrodynamic due curve-constraint were assessed demonstrate practicality efficiency proposed method. results show produces almost unchanging patterns. provides effective tool for varying linear fashion.