Draft Survey

Determination of cargo quantity based on vessel draft — neutral, traceable, and documented according to international standards.

Precise Determination of Cargo Quantity

A draft survey is used to determine the amount of cargo loaded or discharged by measuring the change in a vessel’s draft. The method is internationally recognised and commonly used for bulk cargo operations. I conduct draft surveys neutrally, with technical accuracy, and with complete documentation.

What Does a Draft Survey Include?

1. Reading the Draft Marks

Recording forward, midship, and aft drafts, taking into account visibility, trim, and water conditions.

2. Determining Water Density

Measuring dock water density, as it directly influences the displacement calculation.

3. Calculating Displacement

Using the vessel’s hydrostatic tables to determine displacement before and after loading or discharging.

4. Determining Cargo Quantity

Calculating the difference between both displacement values — the basis for determining the loaded or discharged cargo amount.

5. Documentation & Report

Preparation of a complete draft‑survey report including all measurements, calculations, and remarks.

Why Captain Langer?

Draft surveys require accuracy, experience, and neutral, traceable documentation. That is exactly what I stand for.

Neutral & Independent

Objective execution without conflicts of interest.

Technically Precise

Accurate measurements and calculations according to international standards.

Structured Documentation

Complete reports for shipowners, agents, and insurers.

Calm, Professional Working Approach

Focused, reliable, and technically sound.

Contact for Draft Surveys

For draft surveys, verification measurements, or independent documentation — I look forward to hearing from you.