Designing a ship hull is a complex procedure that involves constructing the basic hull using predetermined criteria or specified lines. Grasshopper, a visual programming environment for Rhinoceros 3D (CAD software), has a parametric modeling and analysis tool that automates the generation of ship hull and line plans using offset tables. This strategy reduces the necessity of manual design while enhancing efficiency and precision. Grasshopper is widely used for generating designs, enabling designers to visually create intricate algorithms by connecting components instead of writing code. This paper proposes a novel technique to automate the construction of ship hull and line plans with Grasshopper, leveraging its parametric capabilities to produce hull shapes and plan lines readily from offset table data. Future advancements may involve combining hydrostatic and hydrodynamic evaluations, improving hull performance, and automating the fairing process. A user-friendly interface and real-time collaboration tools can boost accessibility and design flexibility.