Koike Marine Survey Inc.

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Draft Survey

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In the future, the following points to keep in mind conducting a draft survey are as follows:

‡@Outline of Draft Survey A large amount of dry bulk cargo is usually transported by vessel. The quantity of cargo loaded on the vessel is generally determined by a draft survey.
‡AArchimedes' principle The basic theory of the draft survey is the principle of Archimedes. This principle is simple, it is a law of nature recognized by everyone in the world, so it is internationally convincing about the survey results obtained based on it.
‡BReading of Draft Mark In bad weather, reading vessel's draft marks is annoying. A draft reading device has been developed to improve it even a little.
‡CDensity measurement The density of the seawater in which a vessel floats varies depending on the sea area and the season. Also, the final value will differ depending on the type of hydrometer.