⚓Draught Survey

Precision Quantity Verification for Bulk Cargo

In international bulk shipping, determining the exact weight of cargo loaded or discharged is critical to preventing financial discrepancies and commercial disputes. Our Draught Surveys provide an independent, highly accurate, and universally recognized method for quantifying loose bulk cargo—such as coal, iron ore, grain, cement, and scrap metal—by measuring the vessel's displacement before and after cargo operations.

We act as an impartial shield for charterers, owners, and cargo interests, executing rigorous calculations that ensure you only pay for, or receive, the exact tonnage certified.

What Our Survey Covers:

• Meticulous Draft Reading: Taking exact physical readings of the vessel’s draft marks (forward, aft, and midships on both port and starboard sides) to establish the precise waterline.

• Water Density Verification: Measuring the specific gravity of the dock water at the exact depth of the vessel's sea suction using certified hydrometers, accounting for salinity variations that impact displacement.

• Consumables & Deductible Weights Accounting: Accurately measuring and factoring in all non-cargo variables on board, including fuel oil, diesel oil, lube oil, fresh water, bilge water, and ballast water tanks.

• Hydrostatic Table Calculations: Utilizing the vessel's official shipyard hydrostatic data to compute the true displacement, correcting carefully for trim, heel, and hogging or sagging deformation.

Why Partner with Gulf MSC?

Even a slight calculation error in draft or water density can mistakenly translate to hundreds of metric tons of cargo, leading to massive financial losses or short-landing claims. At Gulf MSC, our surveyors possess extensive on-board experience and utilize strict industry-standard formulas. We provide transparent, legally defensible, and universally accepted draught survey reports that give all trading parties complete peace of mind.