Initial Enquiry:
For the upcoming cruise ship refit, a large operator required assistance with the overhaul of the four Wartsila Thrusters but wanted to investigate alternatives to OEM supplied parts and field service.
Project Objectives:
Provide parts and service expertise for the Wartsila Thrusters.
Complete the overhaul of the four thrusters within the 12-day refit window.
Overcome any unforeseen on-site issues and to the highest standards without delay to the ship’s departure date.
Project Description:
All four thrusters were removed from the ship and transported to a workshop for complete disassembly. The inspection and overhaul of all relevant parts were completed.
The work included:
- NDT of all vital components including gears, blades, blade carriers and hubs. Seals and bearings replacement.
- Bearings re-shimmed and re-set to factory specification
- Gear backlash restored to factory limits.
As part of the overhaul, the primary seal assemblies were retrofitted by AEGIR-Marine to a twin lip seal design enabling off the shelf delivery of wearing components for future overhauls.
Due to the 20-year thruster age and consequent on-site emerging work, AEGIR-Marine also quickly supplied parts for unforeseen damage including new flexible input shaft couplings, hub sliding blocks and multiple small parts.
The team of AEGIR-Marine engineers worked day and night – completing the overhaul of the thrusters ahead of schedule, allowing some of them to return to their base earlier than planned.
Conclusion:
All four thrusters were overhauled in good time ahead of schedule.
Parts supply, and emergency on-site parts supply was achieved with no delays.
The on-site AEGIR-Marine engineers conducted the overhauls to a high quality and the satisfaction of the operator and on-site Lloyd’s surveyors.
The Thrusters performed successfully through sea trials.
AEGIR-Marine has become the operators first independent supplier of Parts and Service for thrusters.
AEGIR-Marine provided the customer with a significant cost saving when compared to an OEM supply option.
To find out how AtZ can help with your overhaul projects, please contact us.