Hydrodynamic interaction between a free surface water wave and a bottom-fixed body near a vertical breakwater by using BEM with a novel Neumann-to-Dirichlet boundary condition - Un-Ryong Rim; Chang-Bom Jong; Song-Hyok Han; Tong-Ju Ho; Yong-Il Jong; Ju-Song Kim; Ryong-Chol Kim; Guk-Chol Ma; Sok-Yun Kim; Hyong-Ju Yang (Wave Motion, 2026)