Too few design parameters lead to insufficient design space, while too many make the method too complicated and lose the importance of parametric modeling. Therefore, in order to develop an applicable parametric method for optimizing the hydrodynamic performance of the hull, the geometric features related to the hull form are here investigated during the hull hydrodynamic study. In previous investigations, empirical equations were established using parameters such as the Froude number, beam/length ratio, and deadrise angle to evaluate the performance of planing hulls [1]. In recent years, more scholars have focused on the finer geometric features of planing hulls and conducted research on their hydrodynamic performance. [PERSON] et al. [18] performed computational fluid dynamics (CFD) investigations on the total resistance, sinkage, and trim angle of the planing hull by establishing calculation models for the hydrodynamic performance of seven boat types. They examined the effect of various features, including spray rails and chines, on the performance of the planing hull. [PERSON] [19] utilized a monohull planing model as the main form to establish a double chine planing hull and analyzed the effects of the deadrise angle and spray rail width between the two chines as design parameters on both the total resistance and wave resistance. [PERSON] et al. [20] developed a prediction model for the residual resistance of a planing hull via a random forest model with six variables, including the geometric characteristics of the hull such as the length/beam ratio (\(L/B\)), prismatic coefficient (\(C\)P), and Froude number (\(F\)r). [PERSON] et al. [21] established a resistance objective function incorporating three major \(F\)-parameters--the static load coefficient, longitudinal center of gravity position relative to the beam (\(L_{\text{CC}}/B\)), and deadrise angle (\(\beta\))--and utilized an approximate optimization model to obtain the optimal resistance hull form for a high-speed passenger boat. [PERSON] [22] considered non-prismatic hull forms with variable and negative deadrise angles in the hydrodynamic modeling approach for planing hulls. [PERSON] et al. [23] proposed a special approach, the so-called \"virtual prisms\", to evaluate the dynamic equilibrium of the planing hull on the water surface and then applied it to hull forms with varying deadrise angles along the length of the boat. [PERSON] et al. [24] conducted experimental and CFD investigations on a deep-V hull form and analyzed the effect of the bow shape on the resistance and seakeeping performance. In general, the construction of the planing surface, particularly the distribution of deadrise angles and the profile shape, plays a vital role in the hydrodynamic performance of the planing hull. However, current design approaches for planing hulls rarely consider the deadrise angle as a design parameter. Therefore, this study aims to incorporate crucial design parameters, including longitudinal functions for the deadrise angle of the planing surface, to establish a modeling approach that focuses on key geometric features, especially the planing surface. The main goals of this article can be summarized as follows: (i) In response to the need for optimizing the hydrodynamic performance of planing boats, appropriate design parameters with high flexibility and independence are reasonably introduced. Therefore, the designer can freely choose them for local or global optimization; (ii) a modeling approach based on B-spline theory is proposed. Using the design parameters as constraints, a set of equations is appropriately constructed to generate the main feature curves and sections (station curves) of the hull, which are solved to form the main frame of the vessel. To this end, the hull surface is constructed by employing B-spline surface interpolation. The modeling approach is implemented in a programming environment, and hull models are established to validate the practicality of the proposed approach.