To support designers and engineers in evaluating design concepts more efficiently, MARIN has developed the hydrodynamic suites QSHIP and QPROP. Hydrodynamic considerations have a great impact on the operational performance of a ship during its lifetime. For this reason, it is important to integrate hydrodynamic analyses as early as possible into the ship design phase. Improving powering, seakeeping and maneuvering performance may have a major impact on design aspects such as the capabilities and General Arrangement plan. Improving hydrodynamic performance at more advanced stages of the design is hardly possible. This led MARIN to develop the hydrodynamic suites QSHIP and QPROP.