DRAFT SURVEYS

DRAFT SURVEYS

USFGIS draft survey services determine the weight of the cargo by comparing the displacement of water by a ship or barge with and without cargo.

A draft survey exists of complex calculations in which the following data is required:

  • water density
  • changes in ballast
  • trim and deformation corrections
  • changes in the vessels consumables

Please contact us for further information about draft survey services.

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