LESSON 16: The DEADWEIGHT SURVEY

Jan 28, 2021 · 11m 25s
LESSON 16: The DEADWEIGHT SURVEY
Chapters

01 · William E George - Live from the Stability and Trim Studio this is William George

2s

02 · William E George - Lesson 16

1m 7s

03 · William E George - Sign Off

10m 58s

Description

A Deadweight Survey is done normally when only the Surveyor attended the Finish of loading a dry bulk cargo. The procedure is basically the same as a Draft Survey except...

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A Deadweight Survey is done normally when only the Surveyor attended the Finish of loading a dry bulk cargo.

The procedure is basically the same as a Draft Survey except there is no Corrected Light Displacement. All tanks must be sounded and corrected for list and trim. The Light Ship Weight and Constant must be determined from the vessel's approved loading manual. Any other miscellaneous weights other than cargo must be idenified such as an anchor on the bottom.

For this project refer to your work in the preceding exercise. Use the Finishing Ballast calculations and the Starting FO and DO calculations along with the Finishing Drafts and water density to determine the Cargo Weight by Deadweight Survey.

To determine the Cargo Weight by Deadweight Survey the following form should be used:

Corrected Loaded Displacement
-FO & DO
-Ballast & FW
-Light Ship
-Constant
Any other identifiable Weights
Cargo Weight by Deadweight Survey

The only difference between a Draft Survey and a Deadweight Survey should be between the Ship's Published Constant and Light Ship Weight and the ACTUAL Ship's Constant and Light Ship Weight which you were not able to determine. Remember in a Draft Survey the Values of Ship's Constant and Light Ship Weight are included in Start and Finish Surveys so they are canceled out when finding the difference between the Loaded and Light Conditions.
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Author William George
Organization William George
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