Structural design of ships may follow “simple” classification society rules. This is still common practice on many shipyards and design offices. However, such ship designs are often not competitive. Alternatively, direct proof of sufficient strength for an individual case is possible. Such a direct proof of sufficient strength may reduce steel weight and associated costs. In addition, noise and vibration (leading eventually to fatigue problems and associated damage claims) have gained importance in international legislation and building specifications. Here, direct analyses are required to determine the natural frequencies and the resonance risk. In sum, direct analyses are best business practice in modern ship structural design and are expected to gain further importance in the future.