The purpose of the present study is to solve surface crack in welded joint of ship structure. To know the mechanical properties and the crack growth predictions of the surface crack are very important from the point of view of fatigue strength evaluation. In this study, shell-solid mixed analysis using Rigid Body Element 3 (RBE3) in MSC.Nastran and Virtual Crack Closure Method (VCCM) for quadratic tetrahedral finite elements adopted to evaluate Stress Intensity Factors (SIFs) in the welded joint of a ship. As a numerical example, the calculation of SIFs to the surface crack in welded joint of three cargo hold carrier are demonstrated. The accuracy and effectiveness of the proposed method are discussed.