Simulation-based analysis of ship motions in short-crested irregular seas

Demonstration of the seakeeping calculation results other than polar diagrams and Cartesian plots is important during the initial and detail design stages of naval platforms due to the necessity of numerical simulations (time series data) for the design and validation of the systems on board. These systems mainly include active roll stabilizer fins, active motion interceptors, rudder roll stabilization, helicopter securing & traversing, helicopter visual landing aid, and all sensors & weapons. The simulated time series of ship motions and wave elevation may also be used for the naval platform itself to derive the shear force and bending moment distribution of ship sections using ship hydroelasticity theory. These time series simulation as are called as “real time computer experiments”. Similar simulation algorithms for ship motions and wave elevation are also used by ship-handling simulators for realistic visualization. The goal of this paper is to create a basis for the simulation-based analysis of ship motions and wave elevation for future design and validation studies for both the naval platform itself and the systems on board. The results of this study may also be used in ship-handling simulators or helicopter landing on ship simulations.