The important part of the tsunami science is focused on studying the considerable influence of natural geographical objects, like islands and coast bathymetry, on the tsunami waves. Currently, such investigations are mostly implementing by physical modeling allowing obtaining good results on impacting submarine barriers on tsunami wave propagation but actually very expensive. We are designing a system allowing numerical computer simulations for crucial coastal areas supporting so-called hybrid bathymetry that combines natural and artificial underwater objects as well as tools allowing the user to manipulate with them. The paper describes the main features the original Bathymetry and Tsunami Source Data Editor that allows tuning/editing bathymetric and tsunami source data by including/removing artificial barriers as well as specifying their placement, shapes and sizes.