Draft Survey Expertise: Precise Ship Cargo Weight Determination
With over 25 years of industry experience, Ruswal Global Inspections provides professional draft survey services for shipping companies worldwide. Our certified marine surveyors deliver precise bulk cargo weight assessments, following international maritime standards and using state-of-the-art equipment for accurate results.
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All You Need to Know About Draft Surveys
What is a draft survey?
A draft survey is a marine procedure used to precisely calculate the weight of bulk cargo—such as Steel products, scrap metal, or grain—being loaded onto or discharged from a vessel. This process is grounded in Archimedes' principle, (A submerged object experiences an upward force equal to the weight of the fluid it displaces). By measuring the ship's draft—the vertical distance from the waterline to the keel—before and after the cargo transfer, the draft survey determines the change in the vessel’s displacement and accurately determins the cargos weight. To guarantee accuracy, adjustments are made for factors such as ballast water, fuel, and other consumables.
Widely recognized for its cost-effectiveness and reliability, the draft survey minimises discrepancies in cargo weight calculations and ensures compliance with international maritime standards.
Why choose Ruswal Global for Draft Surveys?
- Experienced Surveyors: Our draft surveyors at Ruswal Global have significant expertise conducting draft surveys on a variety of vessel types and cargoes.
- Precise results: We use cutting-edge equipment and software to provide reliable and accurate results
- Global Standards: Our draft surveyors are aware of and adhere to international standards and regulations.
- Hassle-Free Process: We know your time is valuable. Our draft surveyors work quickly and quietly, blending into your day-to-day activities, without slowing things down or getting in the way.
- Comprehensive Reports: We supply the client with extensive, easy-to-follow reports with the crucial information you need to verify the weight of your bulk cargo, and make quick and informed decisions.
Our draft surveyors carry out precise measurements, which are entered into Ruswal Global’s proprietary reporting system. Using internationally standardised draft survey protocols, we calculate cargo weight for loading or discharge. All calculations are manually cross-checked for accuracy. The final report includes all survey data and can be used for quantity certification. Copies are issued to the vessel and client, providing a reliable record for operations and regulatory compliance.
Don’t leave cargo weight to chance!Contact us today to discuss your draft survey needs.
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Services
Loading Supervision
Discharge Supervision
Pre-Shipment Inspection
Container Inspection
Sampling and Testing
Pre-Purchase Inspection
Cargo Inspection
Scrap Metal Inspection
Steel Products
Food Products
Fertilisers
Fuels
Grain
Paper
Coal
Machinery
Marine Survey
Draft Survey
Bunker Survey (BQS)
Condition Survey
On/off hire
Hatch cover testing
Ship Superintendency
Glossary of terms related to our services
Certifications
Newsfeed
Contact Us
+31 108 90 65 29
+44 204 577 09 29
ruswal@ruswal.org
Draft Survey FAQsQ: What is a draft survey? Q: Why choose Ruswal Global? Q: What factors affect a draft survey? Q: Where do we perform surveys? Q: What is a bunker survey? Q: What reports do clients receive? Q: How long does a draft survey take? Q: Do you follow international standards? Q: What other services do you offer? Q: Why is accuracy important? |