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On-site machining of 870mm rudderstock in Bahamas

Goltens in-situ machinists rectify damage to cruise ship rudderstock

During the drydocking of a cruise vessel in the Bahamas it was discovered that one of the vessel’s rudderstocks was badly worn with significant ovality and scoring on the journal surface.

Knowing that Goltens has the capability for machining up to 1.1 meter diameter journals, the customer contacted Goltens Miami to make a proposal for an on-site machining repair.

Goltens Miami reviewed the requirements for the 1,115mm long x 870mm diameter shaft and immediately prepared its single point cutting tools and mobilized two teams of technicians to work around the clock to repair the shaft.

  • Goltens On-Site machining of Damaged rudderstock journal

    Damaged rudderstock journal

  • Goltens On-Site Machinists preparing rudderstock for tool installation.jpg

    Preparing rudderstock for tool installation

  • Single point cutting tools mounted by Goltens On-Site Machinists

    Single point cutting tools mounted

  • Goltens On-Site Machinists machining rudderstock Journal

    Journal Machining in progress

  • Rudderstock Journal Machining in progress by Goltens On-Site Machinists

    Journal Machining in progress

  • Goltens On-Site Machinists Polishing the journal

    Polishing the journal

  • Goltens On-Site Machinists finalizing the rudderstock repair

    Finalizing the rudderstock repair


Rudderstock Machining
Location: Bahamas
Vessel Type: Cruise Ship
Journal Diameter: 870mm
Journal Length: 1,115mm
Material Removed: 0.80mm
Machining Time: 5 days


  • Single point cutting/machining of damaged rudderstock removing 0.80mm from the diameter for a finished diameter of 869.20mm
  • Machine polishing of journal surface to required roughness
  • Grinding of journal end surfaces


Goltens’ in-situ machinists completed the large diameter machining job working 2 shifts in 5 days and the shipyard machined an undersized bearing to suit the new diameter of the rudderstock.

The shaft was inspected and accepted by the customer and the vessel was able to complete its drydocking without further interruption.

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