A draft survey studies and calculates the weight or vessel’s draft in various loading stages and conditions. Together, draft surveys and lightweight surveys form part of a so-called deadweight survey. For an adequate draught survey, you need hydrostatic data, the general arrangement plan, the tank arrangement plan as well as sounding tables and draft mark drawings.
During their operational life, ships may undergo minor or major refits or conversions. Refits and conversions are likely to affect the weight and draft of the ship as well as her behaviour during loading or unloading. Ship owners and operators must be sure of the behaviour of their ship during harbour operations.
Often, they are not aware of the fact that a draft survey is mandatory. IMO, classification and sometimes the flag state demand a draught survey every 3 to 5 years after a refit or adjustment. A draught survey is also required when the calculated weight of a ship is inconsistent with the measured draft. Obviously, complex situations may occur after major refits or when there are extremely tight deadlines. In some cases, a draught survey must be followed by a lightweight check.
With the assistance of Saltwater your draft surveys are accurate and complete.
Saltwater provides a full-service solution. Our team of professionals will guide you through this complex process from start to finish. Contracting Saltwater for a draught survey means you are sure to meet all requirements. No matter how complex the situation.
Saltwater draft surveys involve a full-service package. First, we will investigate the reason for the survey together with our client. Tolerating values and ship specifications are used to map out the situation. Then we will write the procedure for the draft surveying process and specify its planning. This will be reported to the ship owner. Once all pre-conditions are met, the actual draught survey takes place. After the draught survey, we will inform Classification of the reading results and provide recommendations for proper and safe operations.
Contracting Saltwater means having a professional partner in every step of the draft surveying process.
The expertise of Saltwater in practice
Saltwater was contracted by Stena Line to perform the lightweight check for the Stena Britannica.
Saltwater was contracted to perform the lightweight check for two vessels.
Are you facing a challenge?
Our team of professional, multi-disciplined marine engineers is very talented. Every member is equally important and that makes us a tight-knit group. Every week brings new challenges, and every week we work together to meet them.
