The system requires minimal preparation; and will be available to perform welding inspection and also corrosion mapping. The operator places it on the ship hull and the robotic crawler is performing a pre-determined scan pattern in order to complete the required inspection. Thanks to its laser weld tracking system, ShipTest will be able to identify the ship weld and crawl along to scan the areas required. The scan data are automatically processed and stored for off-line evaluation by an NDT expert. A special software module performs pre-analysis in order to identify indications of potential defects. The NDT expert can therefore examine only these pieces of data instead of going through the entire data set. In this way, the assessment can be carried out efficiently.