This research aimed to find out how to identify qualified and unqualified welders of shielded metal arc welding (SMAW) in the shipyard industry. A cost-effective system that can identify the welder skills in real time is needed to reduce the cost of inspection and to maintain weldment quality. In this study. 9-degree of freedom (DOF) sensors of the inertial measurement unit (IMU) were... https://parisnaturalfoodes.shop/product-category/super-mushroom/