During the design process of a new high speed vessel you always have to go several rounds through the well known design spiral towards your final goal. It is a fine balance between the importance of the different ship parameters and the possibility to achieve your wanted demands. It is a trade off situation and you have to weight the pros and cons of your eventually decisions. This means that you have to study how you in the best possible way can incorporate the main comfort parameters like lighting, temperature, noise, vibration and motions in the ship design. If you achieve a good combination, you will have satisfied passengers and a crew that have the best possible starting point to take care of the passengers.