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Hull Surveys


OPSYS is approved by all major Classification Societies to perform Ultrasonic Thickness Measurements Surveys.

In this affect all personnel, working and safety procedures, training and evaluation, equipment, and reporting are continuously monitored by Classification Societies to ensure compliance.

  • Renewal planning by indicating condition of steel, highlighting areas of serious wastage, fracturing or buckling based on gauging results, visual inspection & photography.
  • Indicating cropping lines for renewal or re-coating and if necessary, calculation of steel weights.
  • Providing draft reports at sea informing Ship Owner in advance, prior to drydocking or lay-up.
  • Mapping the extent and severity of individual pits by way of systematically checking pitting corrosion in each bay.
Furthermore OPSYS is ISO 9001:2008 certified, over and above Classification Society standards.


OPSYS is an approved and certified company performing Ultrasonic Thickness Measurement surveys of hull structures by all major Classification Societies such as the DNV, ABS, BV, GL, LRS, NKK, and RINA.

Our experienced technicians travel worldwide to perform UTM surveys accurately, efficiently and on time to specific Classification Standards i.e. type of survey (special, intermediate, CAP), ships' type and age in order to specify the extent of measurements.

The final report compiled to Classification Society standards for approval is usually the last step of a process beginning by the detailed condition survey that owners require in preparation for steelwork repairs, prior to drydocking.

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