Optimization of a combined tanker/platform type vessel based on simulation modeling

The choice of the height of the side of a cargo vessel, as a rule, is carried out on the basis of solving the equation of cargo capacity, while the remaining requirements for its size act as restrictions. However, if the ratios of the main dimensions and the requirements for the minimum freeboard height are somewhat conditional, then ensuring seaworthiness, which, in addition to capacity, when choosing the side height, should include unsinkability, requires high-quality accounting. The article presents a mathematical model for assigning the freeboard height, taking into account the requirements of the Rules of the Russian Classification Society for checking the landing and stability during flooding of one or several adjacent regulated compartments; an analysis of the effect on the height of the side of flooding of various compartments of an oil tanker of mixed (river-sea) navigation is carried out and an approximate formula for calculating it at the initial stages of design is proposed.