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Here, you need to scroll according to your sounding and then you will get initial steps of Volume, we called it “ OBSERVED VOLUME“.īefore being scroll you must have to consider some stability issues like Trim / List. Below Picture will clear your vision more: And sounding is just opposite.Īccording to the Sounding / Ullage of the Tank you will need to scroll down on your Tank table and then you will find Observed Volume. The air space between the oil surface and the top of the tank is known as ullage.
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Ullage is the volume that is left empty in a tank so that there is space for the liquid in the tank to expand. Ullage/ Sounding just reciprocal to each other. There are two methods to get Volume, either by ULLAGING/ SOUNDING.
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You are reading this article means you are interested in Tanker vessel’s operation.
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