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Chapter 16 Draught Surveys If, during loading and discharging, no shifting of weights was to take place, other than the movement of cargo, then calculating the weight of cargo by draught survey could

How to fill out draught surveys

How to fill out draught surveys

1. Gather necessary tools and equipment, such as a sounding tape, scales, and draftsman’s log.
2. Ensure the vessel is safely moored and stable for accurate measurements.
3. Measure the freeboard (distance from waterline to the deck) at the bow, midpoint, and stern.
4. Record the draft (distance from waterline to bottom of the hull) at the same locations.
5. Calculate the average draft by adding the draft measurements and dividing by three.
6. Take into account any list (tilting) and trim (forward or aft inclination) of the vessel.
7. Use the ship's hydrostatic data to determine the vessel's displacement based on the measured drafts.
8. Compile all data in a draft survey report for record-keeping.

Who needs draught surveys?

1. Shipping companies to assess cargo weight and stability.
2. Marine surveyors for cargo measurement and verification.
3. Insurance companies to determine the value of insured goods.
4. Port authorities for compliance and safety regulations.
5. Freight forwarders for logistical planning and operations.

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What is draught surveys?

Draught surveys are assessments conducted to measure the weight of cargo on a vessel by measuring the waterline changes as the vessel is loaded or unloaded. It involves calculating the difference in the vessel's draft before and after loading or unloading to determine the weight of the cargo.

Who is required to file draught surveys?

Typically, ship operators, cargo owners, and shipping agents are required to file draught surveys. The responsibility may vary based on contractual agreements and jurisdiction.

How to fill out draught surveys?

To fill out draught surveys, measure the vessel's draft at several points (usually at the bow, stern, and amidships) before and after loading or unloading. Record the readings, along with relevant details such as date, time, and weather conditions, and then use these measurements to calculate the total weight of the cargo.

What is the purpose of draught surveys?

The purpose of draught surveys is to accurately determine the weight of cargo loaded onto or discharged from a vessel, ensuring proper documentation for billing, safety, and compliance with maritime regulations.

What information must be reported on draught surveys?

Draught surveys must report information including vessel's name, date and time of measurement, draft readings at specified points, water density, atmospheric conditions, and calculations of cargo weight. Additional details may include signatures of responsible personnel.