Technical development in ships has been tremendous during the past 10 years. New technology has been introduced faster than ever before in the shipbuilding history. The new stricter rules have been the generator for many new solutions, but especially the total economical, conceptual approach has made it possible to introduce new systems, equipment and arrangements into a typically conservative market. Investments are considered on basis of lifetime cycle costs, but taking into account also possible additional revenues. The issue is to maximize the efficient revenue generating space at minimized investment and running costs, but taking into account availability and environmental impacts as well.