In this article we analyzed real thickness measurement data collected on aged bulk carrier. Totally 25 aging bulk carriers were investigate under the 38 special ships surveys. As it is most important part of bulk carriers are fuel oil tanks, which can be located in different areas, in this article we analyze fuel oil tanks located in double bottom tanks. During exploitation life of ships there are lot of influenced factor as it is cargo operation, maintains, type of cargo, transport route and etc., which can accelerate corrosion and lead to different steal damage. From that reason it is important to analyze corrosion data in order to describe the expected corrosion. The aim of this article is to analysis totally 3136 thickness measurement data and find some correlation between the measured values and the time. It is clearly seen that the number of measurements increases with the time which can affect the results of the statistical analysis. Obtained statistical and graphical results show that the linear regression between statistical value and the Year parameter would be well appropriate to describe estimation model for inner bottom plates of bulk carriers.
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