Structural Analysis on the Block Lifting in Shipbuilding Construction Process Muhammad Nurul Misbah, Septia Hardy Sujiatanti, Dony Setyawan, Rizky Chandra Ariesta and Satriyo Rahmadianto MATEC Web Conf., 177 (2018) 01027 Published online: 04 July 2018 DOI: 10.1051/matecconf/201817701027