Draft Survey

Avocet Data

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This App explains the working of a Draft Survey using a single ship called Sample Ship. It is limited to one ship. It shows the semantics and the calculations involved in obtaining the cargo quantity on board a vessel.

This app is offline App and no data or permission is required to be set on Mobile equipment. There is an option to save the report locally. The system will prompt you for permission.
WHAT IS A DRAFT SURVEY
A Draft Survey is a method used on board ships to determine the weight of cargo loaded or discharged by measuring the vessel’s drafts before and after loading. This process involves reading the draft marks on the ship’s hull, correcting for factors such as trim, water density, and ballast, and using hydrostatic tables to calculate the displacement. The difference in displacement before and after cargo operations gives the cargo weight. Draft surveys are commonly used for bulk cargoes like coal, grain, and ore, ensuring accurate measurement for commercial and regulatory purposes.

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Works offline and no internet is required.