Customer's Challenge

A vessel docked at a Singapore yard urgently required a replacement for its damaged rudder stock. Before the installation of the new rudder stock, which was being shipped from Europe, it was essential to collect dimensional and alignment data of the existing rudder sub-assembly (rudder blade, rudder neck, and rudder horn pintle). Traditional geometric alignment systems and tubular micrometers were not feasible for capturing straightness and taper ratio data, so the vessel owner approached Metal Machines to propose an effective solution.

Solution

We deployed the API laser tracker, the ideal instrument for this task due to its ability to gather vast amounts of precise digital data on the angular alignment, straightness, and dimensions of the cone housing. Given the confined space at the site, we positioned the laser tracker at a 90-degree horizontal angle and mounted it on a specially designed magnetic holding frame to measure both the rudder neck and horn pintle.

The 3D measurement process was completed within one day, and we provided the results, including a detailed CAD file, to the vessel’s superintendent the following day.

Benefits

The laser tracker enabled us to efficiently capture a larger volume of accurate digital data on the rudder dimensions and alignment. Using the data in SpatialAnalyzer software allowed for thorough analysis and helped minimize the risk of any misalignment or delays during assembly.

Compared to traditional measurement tools, the laser tracker demonstrated superior versatility, productivity, and precision, making it an invaluable solution for complex geometric assemblies in ship repair and maintenance.