Det Norske Veritas has developed an alternative design-verification methodology for shafting systems for ship propulsion. This methodology satisfies all shaft fatigue safety requirements and gives a better basis for cost optimizations than other established codes. For two-stroke powered propulsion plants, such as discussed in this paper, saved costs are basically related to the choice of torsional vibration damper size and more slender shafts resulting in simpler shaft alignment and less bearing problems. Shaft design examples based on the Del Norske Veritas methodology and essential elements of the theory are presented.

This content is only available via PDF.
You can access this article if you purchase or spend a download.