According to the relationship among the ship parameters including ship dimensions, displacement,wind area, shape coefficient of ship parameters and ship shape characteristics which are stipulated in the current code, and considering the characteristics that ship photos and ship itself are in line with similar scale, we collect and analyze ship photos and related data, and achieve the calculation method and corresponding parameters for the ship height above water surface, which solves the problem due to the lack of method for the calculation of the ship height above water surface in JTS 144-1—2010 Load Code for Harbour Engineering.