Hull Structural Integrity Calculation Excel Template

Hull structural integrity is fundamental to vessel safety, longevity, and regulatory certification. The Excel template operationalizes key structural analysis methodologies—including beam theory for global hull girder response, plate and stiffener buckling checks per scantling rules, and local stress concentration assessments—within a user-friendly interface. Inputs typically include hull geometry (length, breadth, depth, draft), material properties (yield/tensile strength, modulus of elasticity), loading scenarios (still water, wave-induced, slamming, torsional), and classification society requirements. Calculations are organized in modular worksheets (e.g., 'Global Bending', 'Bottom Plating', 'Side Shell Stiffeners') with built-in validation logic, error-checking alerts, and color-coded pass/fail indicators aligned with rule thresholds. The template supports iterative design by enabling parametric sensitivity studies—such as varying plate thickness or stiffener spacing—and automatically updating safety factors (e.g., utilization ratios ≤ 1.0). While not a substitute for full FEA or class-approved software, it serves as an essential preliminary screening, compliance documentation aid, and educational tool for naval architects and marine surveyors.