T&R Bulletin 1-24: The Application of Spectral Analysis and Statistics to Seakeeping (1963)

The last decade has seen a marked increase in the study of seakeeping characteristics of ships. There are several reasons for this. From a military standpoint, extending the speed range is an essential naval requirement, so much so that radical new forms such as hydrofoil boats, ground effect machines, etc., are receiving considerable attention. Passenger traffic has always had the requirement of high speed and minimum discomfort but competing air travel has accentuated these needs. Commercial cargo delivery is not so sensitive to increased speed as it is to maintaining speed, safety and structural integrity through avoidance of serious motions, impacts, and deck wetting.