Draft Survey

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draft Draft Survey is a method of cargo weight determination by the ship’s displacement calculations, light and loaded, or loaded and light, taking into account any changes in the weight of the liquids on board the ship. This method’s accuracy depends on the correctness of the performed calculations.

The Draft Survey program allows a user to perform calculations quickly and accurately on any ship, regardless of varying designs of the ship’s documentation. Even if a ship does not possess the complete data, the Draft Survey program calculates needed data using the following subprograms:

  • MTC
  • TPC
  • Sounding Corrections due to the ship’s list and/or trim
  • Liquid’s density correction due to temperature, using ASTM table 54B

The Draft Survey program allows a user to calculate the cargo quantity for one parcel at a time. If there is more than one parcel to be calculated, a new draft survey calculation will need to be started. This can be achieved by transferring previously entered data. As a result, the Finishing Draft Data becomes the new Starting Draft Data, allowing the user to enter new Finishing Draft Data to calculate a new parcel weight. This process can be repeated an unlimited number of times.

This program allows the user to accurately interpolate hydrostatic and liquids data from a ship’s documents, using the interpolation function.

A Draft Survey Report can also be printed. Instructions on how to use the program can be accessed through the Help function at any time while in the Draft Survey program.

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Windows 7 or 8 systems do not come preloaded with 32-bit help file support. Microsoft provides a free download for Windows 7 or 8 users to enable Help file support on your system. Please follow Microsoft’s directions here to install the appropriate software on your system to be able to view the help section in Draft Survey.

The Windows Help program is not supported in Windows 10, Windows Server 2012 or later versions of Windows Server. A downloadable PDF version of each program’s Help Manual is available (go to the main menu of this website and select Software and then Help Manuals).

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