The results of the last than-tests in MARINTEK(Trondheim), Table 1, reported for calm water a navy good performance of the new hull with a different Bow. The following table shows parts of the results, modified with a 15% plus for sea-margin. PE for 12 knots of vessel speed reached 717,9 kW. PE is the effective towing power of the chosen hull-configuration. From this value the calculation of propulsion power, brake-power of the machine and ultimately energy-consumption is possible.