The Tandanor shipyard, in Buenos Aires, completed the repair work on the ocean-going tug DIDI K, as part of a scheduled technical intervention. The tasks were carried out in accordance with the owner’s requirements and covered multiple specialties, meeting the class standards established for this type of vessel.
The mechanical work included taking the rudder clearances and measuring the shaft line drop, as well as the disassembly and assembly of the starboard propeller shaft. The o-ring between the stern tube and the reduction gearbox of that line was renewed, and both propellers were polished, along with the bow thruster propeller. Two fenders on the starboard side were also disassembled and assembled, and the packings in both stern tubes were replaced.
Regarding dry-docking, high-pressure washing (500 bar) was performed on the hull’s bottom and topsides, according to the instructions of the owner and their technical paint representative. Four coats of paint were applied to the hull, and the regulatory markings for drafts, freeboard, names, and tank signage were repainted.
The Syncrolift team unshackled both anchors and chains, laid them out on the platform for inspection, and, once the corresponding tests were carried out by the Quality Control area, proceeded to shackle them again.
In this process, Quality Control carried out the calibration of the chains and the hull ultrasonic gauging, in accordance with the instructions of the classification society ABS and the owner, as part of the Special Survey 3.
These thickness measurements, performed using ultrasonic equipment, allowed for the evaluation of the ship’s structural condition and were documented in a report prepared under the standards of the International Association of Classification Societies (IACS), which guarantees its validity and international recognition. Non-destructive testing (NDT) was also performed on both propellers.
Finally, the Steelwork area carried out the disassembly and assembly of two fairleads, as well as the renewal of the cathodic protection anodes, which are essential for preserving the structural integrity of the vessel.
