BOLIVAR problem solving environment (PSE) is the multi-functional computational software for the researches and engineers who explore the extreme environmental conditions to design and build offshore structures and floating objects. It contains a set of computational modules of various methods for extreme analysis, and a set of modules for the stochastic and hydrodynamic simulation of metocean processes. The PSE is useful for versatile assessments of extreme estimates obtained by different methods and datasets. The application to Baltic Sea wave and wind extremes is discussed.