Master the techniques for high-precision draft reading and the solutions for obtaining accurate results when facing waves or swell in the harbor, ensuring your drafts are reliable even in difficult harbour conditions.

Lesson: 

• Drafts Reading

Understand the correct procedure for density sampling and the essential precautions required to prevent density errors that often lead to significant cargo weight discrepancies.

Lesson: 

• Sampling of Water Density

This module provides the complete mathematical sequence to calculate mean draft and trim, draft corrections, and longitudinal hull deflection, ensuring your final figures are bulletproof and legally defensible.

Lessons: 

• Cargo quantity calculations
• Calculation of Mean Draft and Trim 
• Calculations of Draft Corrections and Corrected Draft 
• Longitudinal Hull Deflection and Quarter Mean Draft 
• The use of Hydrostatic Tables 
• First Trim Correction 
• Second Trim Correction 
• List Correction 
• Density Correction

Let’s go through the complex deductible calculations including imaginary sounding, wedge conditions, and air cushions. Most importantly, you will master how to determine the correct signs for these corrections — a critical element for accurate deductible calculations — to account for every ton and protect the vessel from cargo claims.

Lessons: 

• Deductibles 
• Imaginary Sounding 
• Trim correction for Sounding for Slack Condition 
• Calculation of the volume corrected on Trim for Wedge Condition 
• The case of “an air cushion” 
• List correction for the Sounding 
• Calculation of the volume corrected on List for Wedge Condition 
• Calculation of the ballast water quantity in cargo hold 
• Tables for Deductibles calculations

Acquire the exact algorithm to calculate Nett Displacement for a precise final result.

Lesson:

• Nett Displacement

This module covers the final steps of the draft survey procedure, focusing on cargo weight and constants to determine the final figures.

Lesson: 

• Cargo weight and Constant calculations

Identify the various factors that influence draft survey accuracy, allowing you to proactively minimize errors and improve the overall reliability of your survey.

Lesson:

• Factors that may influence Draft survey accuracy

Develop a decisive action plan for cargo weight discrepancies and understand the core logic behind the Letter of Protest, safeguarding your reputation and the company's interests in international arbitration.

Lessons: 

• Discrepancy in Cargo weight 
• Letter of Protest examples