Hull Thickness Measurements
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Hull Thickness Measurements


A new technology to measure the thickness of ship hulls can reveal corrosive attacks and other weaknesses earlier and more accurately than ever before. Det Norske Veritas and Kongsberg Defence & Aerospace have developed the technology and launched the equipment on the opening day of the Nor-Shipping Exhibition in Oslo. The new equipment, which consists of a hand-held instrument to measure the thickness and position of steel structures inside tanks and holds and an underwater robot for scanning hulls from the outside, can measure the thickness of metals through air as well as water, oil or other liquids. The new technology shows the thickness of the steel at the same time as the measurement is carried out, thereby revealing corrosive attacks immediately. By emitting a spectrum of resonated sound waves, steel thickness can be measured with a great degree of accuracy and far more quickly than before. Corrosion products or exterior fouling do not need to be removed in advance. The measurements are taken digitally and provide extremely accurate values that can be fed into a classification society’s database – such as Nauticus – at the same time as the measurements are being carried out. Information on the hull’s thickness – and thereby also its strength – is of crucial importance to a ship’s safety. The equipment available so far has meant that necessary thickness measurements have been time-consuming, costly and have had a limited ability to gather complete and reliable data on the hull. More information: DNV Contact: Odd P. Torset.


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