Analytical Studies on the Maneouvering of Ships in rough Sea : Part II. On the angles and periods of wave encounter

Abstract

From the point of view of the analysis of the motions of ships in the sea, this is the study on the maneouvering of ships in rough sea. On the solutions for the linear differential equations of ship's motions, given some conditions and simplified, for instance, assuming that the ship is underway in regular sea, then it is given the comparatively simplified equations for relations between the ships and sea. 1) According to the above equations, author defined the critical ranges of the motions of ships and made the diagrams for the relations between wave periods, angles of wave encounter and tuning factors. 2) And, author defined the critical conditions of the relativity of ships motions for sea surface. For an instance, author calculaed and discussed about the ship's data in table 1 on above items.