On the Loads in the Tank-Structure of a Ship due to Cargo Oil

Abstract

In this paper, we study the loads on the tank structure of a ship due to the cargo oil. The results obtained are as follows: (1) In rolling, as the load the statical pressure will be quite enough, which is given by equation (12). (2) In pitching and heaving, the influence of the acceleration in vertical motion is considerably large, so that the load should be expressed by equation (14'), or (15'). (3) In the special cases; (a) On the tank-top-plate, the punching pressure has to be considered, for which a semi-empirical formula (26) is appropriate. (b) On the members of the inner tank-structure such as longitudinal girders, the load can be estimated by equation (35).